**Core Concept**
Naegele's rule is a method used to calculate the estimated date of delivery (EDD) in pregnancy, based on the first day of the last menstrual period (LMP). It assumes a regular 28-day menstrual cycle and ovulation on day 14.

**Why the Correct Answer is Right**
To calculate the EDD using Naegele's rule, we start with the first day of the LMP, which is September 1, 2017. Then, we add 7 days to this date and subtract 3 months, resulting in a new date. Finally, we add 1 year to this date to get the EDD.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not follow the correct sequence of adding 7 days and subtracting 3 months from the LMP.
**Option B:** This option is also incorrect as it does not account for the addition of 1 year to the calculated date.
**Option D:** This option is incorrect because the calculation is not performed according to Naegele's rule.

**Clinical Pearl / High-Yield Fact**
Naegele's rule is a simple and commonly used method to estimate the due date, but it assumes a regular menstrual cycle. In clinical practice, it's essential to consider the variability in menstrual cycles and use ultrasound dating for more accurate estimation.

**Correct Answer:** C. June 8, 2018