The germinal period lasts about two weeks.

• A. Two weeks
• B. Six weeks
• C. Eight weeks
• D. Ten days

Answer: (A)

The germinal period covers fertilization through implantation, a window of about two weeks. It starts when the sperm fertilizes the egg to form a zygote, which undergoes rapid cell division as it travels down the fallopian tube and becomes a morula then a blastocyst. The blastocyst implants into the uterine lining, typically around days 6–10 after conception, and the overall period lasts roughly two weeks. After this stage, the embryonic period begins around week three. So the description “about two weeks” matches this earliest developmental stage. The other options describe later timeframes (weeks three to eight for the embryonic period) or a shorter subinterval within this window, not the entire germinal period.