Of the following, which one most strongly decreases the risk of heart disease?

Which illicit drug causes erectile disorder and inhibits orgasm in both sexes?

a. Marijuana b. Barbiturates c. Amphetamines d. Cocaine

Which is the best example of agoraphobia?

a. Claude once had a panic attack in an elevator, but he never had another. b. Karen is afraid of speaking to a large crowd but does not mind being part of a large audience. c. John has a persistent feeling of doom but has not experienced any panic attacks so far. d. Becky rarely leaves her home except to go to a few familiar places, such as the grocery store and church, and usually only if her adult daughter goes with her.