People use sensate focus when they 

A) want to avoid pregnancy.
B) are treating sexual dysfunction.
C) want to prolong the pleasure of sex beyond orgasm.
D) are in a situation where sex is inappropriate.

Sensate focus is a technique used in sex therapy to treat sexual dysfunction such as premature ejaculation, erectile dysfunction, and low sexual desire. It is a type of mindfulness exercise that involves focusing on bodily sensations and pleasure without the goal of orgasm. The goal is to learn to relax and focus on the sensations instead of performance anxiety or other distractions.