Question

Which of the following statements is true regarding the study of human development?
A. Industrialization created childhood as a distinct stage of life.
B. Fifty years ago, children typically experienced more stress and anxiety than do today's children.
C. The modern concept of childhood developed during the Middle Ages.
D. The boundary between adolescence and adulthood is defined by biological maturity.

its not D!!

Answer 1

I think it's A

Answer 2

a

Answer 3

thank you to both of you