Viagra and other medications for impotence __________.
A) are generally safe
B) decrease blood flow to the penis
C) offer permanent relief from erectile dysfunction
D) are associated with an increased risk of cancer and stroke
Question 2
The inability to attain an erection when desired __________.
A) rarely occurs before age 50
B) is a sign of serious sexual dysfunction
C) becomes more common in midlife
D) is always a sign of declining testosterone
