When attempting to understand developmental transitions that people face throughout their life span, which of the following research designs would be most informative?

The hammer, anvil, and stirrup are the three:

A) components of the eardrum. B) tiny bones in the middle ear. C) parts of the pinna. D) components of the basilar membrane.

Research has found that smokers who successfully quit the

habit can actually achieve extraordinary health benefits as a result of giving up cigarettes. In fact, within _____ years of quitting, the risk of premature death drops to approximately that of a person who has never smoked. The lesson here is that it is never too late to benefit from giving up cigarettes, even if you've smoked for quite a while! A) 1–3 B) 5–10 C) 10–15 D) 15–20