What is a diaphragm made of and how is it used?

A diaphragm is a barrier method of contraception primarily made from a flexible material, typically latex or silicone. It is designed to be inserted into the vagina to cover the cervix, preventing sperm from entering the uterus. For optimal effectiveness, the diaphragm is used in conjunction with a spermicide, which helps immobilize or kill sperm that may encounter the barrier.

The choice indicating the use of rubber placed in the vagina with a gel accurately reflects this method's characteristics. The rubber material conforms to the shape of the vagina and cervix, while the gel enhances the diaphragm's effectiveness as a contraceptive by further preventing sperm from reaching an egg. This combination makes it a reliable option for those seeking to prevent pregnancy.

Other materials mentioned, such as metal or silicone without lubrication, do not represent the functional and design aspects of a diaphragm. This reinforces why the choice regarding the use of rubber with a gel aligns with the correct understanding of diaphragm use and composition.