What is the reason that diaphragms have a relatively high failure rate?

Answer: Diaphragms have high failure rate due to incorrect insertion.

Explanation:

Diaphragms are types of birth control that is reusable and dome in shape. Diaphragms prevent pregnancy by serving as a barrier that cover the cervix which stop the sperm from meeting the egg in the uterus. It is inserted in the cervix and should be used with spermicide (gel that kill sperm) so that it can work well. Incorrect insertion. Have lead to high failure rate I. Preventing pregnancy.