Why was Einstein considered a different child in childhood?

Correct answer: Because he spoke late and stayed alone

Einstein was considered different because he spoke later than other children and often preferred solitude. Option A correctly combines both features described in the biography. These details do not prove that he lacked ability; instead, they show that his early behaviour did not follow the usual pattern expected by adults. Options B and C invent habits that are not presented as reasons for his unusual childhood, while option D is impossible in context because he was still a child and had not become a teacher. The chapter uses these early signs to contrast ordinary social expectations with Einstein’s later intellectual development. His quietness and solitary play were associated with reflection and curiosity, not with failure or weakness.