A woman's last menstrual period started on 1 June 2025. What is her gestational age in completed weeks on 21 September 2025?

Answer and explanation

Correct answer: C. 16 weeks

  1. Step 1: Count the days from the first day of the last period: 112 days.
  2. Step 2: 112 / 7 = 16 completed weeks.
Answer
16 weeks.

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