Barriers as a method of contraception are designed to prevent the sperm from entering the cervix and include condoms, diaphragms, and cervical caps.

• A. Barriers
• B. Hormonal methods
• C. Intrauterine devices
• D. Sterilization

Answer: (A)

Barrier methods work by creating a physical barrier that blocks sperm from reaching the cervix, so fertilization cannot occur. Condoms, diaphragms, and cervical caps are classic examples, placed to cover or obstruct the vaginal entry to prevent sperm from entering the cervix. Some barrier methods may be used with spermicide for added protection, and condoms also offer some protection against many sexually transmitted infections. Other contraception options rely on different mechanisms: hormonal methods prevent ovulation or alter the cervical environment without forming a physical barrier; intrauterine devices reside in the uterus to prevent fertilization or implantation; sterilization is a permanent surgical option. Because the described approach directly blocks sperm from entering the cervix, it fits the barrier contraception category.