The higher a male monkey's level of the hormone testosterone, the more aggressive he is likely to be. This means that:
A) testosterone causes aggression.
B) testosterone and aggression are negatively correlated.
C) testosterone and aggression are uncorrelated.
D) testosterone and aggression are positively correlated.

Question

Quizplus · Accepted Answer

The statement says "the higher a male monkey's level of the hormone testosterone, the more aggressive he is likely to be", which implies that there is a positive correlation between testosterone and aggression. Therefore, option D (testosterone and aggression are positively correlated) is the correct answer.

The Higher a Male Monkey's Level of the Hormone Testosterone