Which of the Following Is True

Which of the following is true?

A) The physical nature of the individual and of American society appears to have been a desired quality during the age of Darwin in the nineteenth-century.
B) Darwin helped people realize how important competition is. Sport was then seen as the tool with which to teach young children the necessary virtue of being competitive.
C) "Manliness" was a necessary characteristic in the modern world. The physicality associated with sports was seen as a desirable counterbalance to the influence of women in the life of young boys.
D) All of the above.
E) A and B only.