Cancer of the __________ is the most common non-skin type of cancer in men.
a. testicles
b. epididymis
c. prostate
d. penis
Question 2
Most substances that have a reputation for enhancing sexual desire or performance work because
a. of chemicals in the substance that affect nerves in the penis or clitoris
b. of chemicals in the substance that affect the brain
c. of chemicals in the substance that affect blood flow
d. of heightened expectations and the social situation