I believe that the answer is A.
It will start 5 years after the 20s
Answer:
diaphragm,cervical cap,male condom, female condom, spermicide foam sponges and film.
Explanation:
unlike other methods of birth control, barrier methods are used only when you have sexual intercourse .
Advantage-extra work\data to compare first data with.
Disadvantage-Your data might change over time.
