According to _____________,because men are capable of impregnating multiple women at the same time,they have an evolved desire for multiple partners.

A) the biological argument
B) the sociological argument
C) the male-desire argument
D) the survival argument

Erection-enhancing drugs increase sexual desire and produce an erection even without sexual stimulation.

Wade is quiet,adjusts only gradually to new situations,and has moderately predictable biological cycles.Which kind of temperament does he have?

A) Easy
B) Slow-to-warm-up
C) Timid
D) Difficult