When using the contraceptive patch, a patient should understand that it

a) should be applied to the breasts, hips, or back.
b) should be applied to the abdomen, buttocks, or back.
c) is immediately effective after application.
d) should be covered when swimming because of chlorine's effect on the adhesive.

should be applied to the abdomen, buttocks, or back.

Correct  

Explanation:  

The patch should be applied only to the buttocks, back, abdomen, or torso (never the breasts). The patch is safe for wearing during swimming and bathing. The patch requires application for 1 week before becoming effective. p112

disposable safety razors<

electric shaver

all of the above