Which of the following is NOT a type of contraception?

The answer indicates that a dental seal is not a type of contraception, which is accurate. Contraceptive methods are specifically designed to prevent pregnancy and include various hormonal and barrier methods. The oral contraceptive pill, for example, uses hormones to regulate ovulation and prevent fertilization, while Implanon (a form of long-acting reversible contraception) involves a small rod implanted under the skin that releases hormones over a period of time. Condoms are barrier methods that prevent sperm from reaching the egg through physical means.

In contrast, a dental seal is a preventive dental treatment used to protect teeth from decay, particularly in children. It has no relevance to reproductive health or pregnancy prevention, clearly distinguishing it from the other options that directly relate to contraception methods.