Which of the following is NOT a natural method of birth control?

Analyze the question: You are asked to find the method that is NOT natural. So four options are natural methods and one is artificial (uses a device or chemical).

Concept: Birth control methods are grouped as:

• Natural methods: these need no device or drug. They rely on timing, behaviour, or the body's own processes. Examples are abstinence, the rhythm (calendar) method, withdrawal (coitus interruptus), and prolonged breastfeeding (lactational amenorrhea, which delays ovulation).
• Artificial methods: these use a device, barrier, or drug. Examples are condoms, diaphragms, IUDs, pills, and injectables. Surgical methods such as vasectomy and tubal ligation are also artificial.

Step-by-step check of each option:

• A. Abstaining from sex: no intercourse, so no pregnancy. Natural.
• B. Prolonged breastfeeding: suppresses ovulation for some time after birth. Natural.
• C. Rhythm method: avoiding intercourse around the fertile period (ovulation). Natural.
• D. Use of condom: a rubber/latex barrier worn during intercourse that prevents sperm from reaching the egg. This is a manufactured device, so it is artificial (mechanical barrier method).
• E. Withdrawal method: the penis is removed before ejaculation. Natural, since no device is involved.

Answer: The condom is the only method that uses a device, so it is not a natural method.

Tip: Ask yourself, "Does it need something bought or manufactured?" If yes, it is artificial. Remember natural methods as ARBW: Abstinence, Rhythm, Breastfeeding, Withdrawal. A condom also protects against STIs, which natural methods do not.