Question

which is the most effective contraceptive method at preventing pregnancy?
diaphragm
abstinence
iud
oral contraceptive

Explanation:

Abstinence (refraining from sexual intercourse) eliminates the possibility of sperm fertilizing an egg, making it the most effective method to prevent pregnancy when consistently practiced. Other methods like IUD, oral contraceptives, or diaphragm have lower effectiveness rates due to potential user error or method failure.

Answer:

abstinence