What is the expected date of delivery (EDD) for a 23-year-old woman whose last menstrual period began on February 15?

To calculate the expected date of delivery (EDD), healthcare providers typically use the Naegele's Rule, which estimates the due date based on the first day of the last menstrual period (LMP). The rule states that you should add one year to the year of the LMP, subtract three months from the month of the LMP, and then add seven days to the day of the LMP.

In this case, if the last menstrual period began on February 15, you would calculate the EDD as follows:

1. Start with the first day of the last menstrual period: February 15.

2. Add one year: February 15 of the next year, which would be February 15 of the following year.

3. Subtract three months: This takes you to November 15.

4. Add seven days: This brings the expected date of delivery to November 22.

Thus, the calculated due date is indeed November 22, confirming that this option is correct.