According to research, the most valid type of interview is:

Which of the following statements about hormone replacement therapy is true?

It involves replacing testosterone that naturally declines with age. Researchers now believe that the studies demonstrating its positive effects were invalid. Physicians currently recommend it to a large proportion of menopausal women. It increases the risk of osteoporosis.

A car crash woke John from his afternoon nap. When he looked out his apartment window, he saw several people milling around two smashed cars. He decided not to dial 911 because he assumed someone had already called. John's reaction is an example of

A) the bystander effect. B) pluralistic compliance. C) obedience to authority. D) conformity to social norms.