The menstrual cycle repeats itself in human females every _____

Options

A. 1 week
B. 28–30 days
C. 4 months
D. 1 year

Answer

**Step-by-Step Solution:**

1. **Understanding the Menstrual Cycle**: The menstrual cycle refers to the series of natural changes in hormone production and the reproductive system that occurs in human females. It prepares the body for potential pregnancy.

2. **Duration of the Menstrual Cycle**: The menstrual cycle typically lasts about 28 to 30 days. This means that from the first day of one menstrual period to the first day of the next period, it usually takes around 28 to 30 days.

3. **Options Given**: The options provided are:
- 1 week
- 28 to 30 days
- 4 months
- 1 year

4. **Identifying the Correct Answer**: Among the options, the duration of the menstrual cycle that is most accurate is "28 to 30 days". This aligns with the average length of the menstrual cycle in human females.

5. **Conclusion**: Therefore, the menstrual cycle repeats itself in human females every **28 to 30 days**.

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