Einstein was against which type of weapons?

Correct answer: Nuclear weapons

The correct answer is nuclear weapons. Einstein’s public life combined scientific achievement with concern for the consequences of modern warfare. After the development of nuclear weapons, he supported appeals for international cooperation, disarmament, and peaceful resolution of conflicts. Toy weapons, wooden tools, and farming equipment are not the destructive weapons discussed in this historical context; they are included to make the contrast obvious. The governing idea is that a scientist can also have a moral responsibility to warn society about dangerous uses of scientific knowledge. Therefore option C correctly represents Einstein’s opposition to nuclear weapons.