Imagine You Are Interested in Testing the Hypothesis That Growing

Imagine you are interested in testing the hypothesis that growing up in the same household might explain why male sexual orientation is correlated with the number of older brothers one has. What two groups of males might you compare on sexual orientation?

A) Males raised with homosexual brothers vs. males raised with heterosexual brothers.
B) Males raised with varying numbers of older brothers living in their home vs. males raised with the same number of brothers who did not live in the same home.
C) Males raised with no brothers vs. males raised with many brothers.
D) Males raised with younger brothers vs. males raised with older brothers.