Which of the following is a challenge of abstinence?
a) It is 100% effective against unwanted pregnancy and transmission of STIs, STDs, and HIV.
b) It may help you to focus instead on other goals such as education, employment, etc.
c) It requires for you to refrain from any kind of sexual activity with any other person.
d) You may change your mind and find yourself unprepared to prevent pregnancy or an STD.