Estimated date of delivery is calculated using?

Correct option is B

Sol. Naegele’s rule is a standard method to calculate Estimated Date of Delivery (EDD). It is done by adding 9 months and 7 days to the first day of the last menstrual period (LMP). It assumes a 28-day cycle and is widely used in obstetric care.
Explanation of each option:
· (a) McDonald’s – Refers to measuring fundal height, not for calculating EDD.
· (b) Naegele’s rule – Correct. It provides a reliable estimate of the expected due date.
· (c) Rule of nine – Used in burn assessment to estimate body surface area affected, unrelated to pregnancy.
· (d) Dawn’s formula – Less commonly used and not standardized; Naegele’s rule remains the preferred method.