combining science and world peace

Correct answer: A. Nuclear weapons

Einstein opposed nuclear weapons and warned about the destructive consequences of nuclear war. His scientific work helped humanity understand the energy contained in matter, but he did not support using that knowledge to destroy civilian life. He became an advocate of peace, international cooperation and responsible control of dangerous weapons. Wooden toys, farm tools and musical instruments are not weapons and therefore cannot fit the historical idea in the question. Option A is correct because it reflects the chapter’s theme of combining scientific responsibility with concern for world peace.

Correct answer: A. World peace

The correct answer is world peace. After the Second World War, Einstein became increasingly concerned about the destructive power of modern weapons and the danger that another war could bring to humanity. His public statements reflected a strong belief that nations should settle disputes through cooperation, discussion and peaceful means rather than violence. New wars, an arms race and military rule are opposite to this humanitarian position. Therefore, option A is correct because the question tests the lesson’s central connection between Einstein’s scientific fame, his concern for human welfare and his advocacy of peace.

Correct answer: A. Humanist

The governing idea is that Einstein was remarkable not only for scientific thinking but also for his concern for human welfare. His understanding of science was accompanied by sympathy for people, support for peace, and a sense of responsibility toward society. Therefore, the correct answer is A, Humanist. A humanist values human life, dignity, peace, and the improvement of society. Trader, king, and soldier describe occupations or positions that are not presented as Einstein’s identity in the lesson. The question highlights the humane side of his personality, so remembering only his scientific achievements would give an incomplete answer.

Correct answer: C. Concern for peace

The governing concept is the humanistic responsibility of a scientist. Einstein’s biography presents him not merely as a discoverer of important theories but also as a person concerned about the consequences of human conflict and the need for peace. Therefore, option C, concern for peace, is correct. Care for peace reflects respect for human life and the welfare of society, which is why it is linked with humanity. Earning money and wanting only fame are self-centred motives not used to explain his humane character. Strict rule describes control, not compassion. The answer connects his intellectual greatness with an ethical concern for people.

Correct answer: A. Opposition to nuclear weapons and war

The governing concept is the responsible use of scientific knowledge and the humanist duty to protect life. Einstein became concerned that scientific discoveries, especially nuclear energy, could be used to create devastating weapons. His opposition to war and his appeal for peace show that he cared about humanity beyond the laboratory. Therefore, option A is correct. Supporting sports may be positive, but it does not demonstrate his specific peace campaign. Business expansion and rote learning are unrelated to his humanist concern and do not explain his public warnings. The biography thus presents Einstein not merely as a brilliant scientist, but also as a thinker who recognised the moral consequences of modern science.

Correct answer: A. He cared for humanity and peace

The governing concept of humanism is respect for human life, dignity, welfare and peaceful coexistence. Einstein's concern was not limited to discovering scientific laws; he also thought about how knowledge could affect ordinary people and the future of humanity. His opposition to war and his appeals for peace make option A correct. Option B reduces a complex life to money-making and ignores his public moral concerns. Option C is the direct opposite of his peace-oriented position, while option D describes neither his principal achievement nor the meaning of humanism. Calling him a humanist therefore recognises the combination of scientific responsibility, compassion for people and commitment to peace.

Correct answer: A. Human welfare and peace

The governing idea is that scientific knowledge carries a moral responsibility. Einstein’s story presents science as valuable not merely because it produces discoveries, but because it should improve human life and support peace. Therefore, option A is correct: science should be used for human welfare and peace. Options B and D are too narrow or harmful because war, destruction, and personal profit misuse knowledge. Option C is also incomplete, since fame is a personal reward rather than the humane purpose of science. Einstein’s concern about the destructive power of modern weapons reinforces the lesson that knowledge must be guided by compassion, responsibility, and concern for all people.