Final answer:
Dating the EDD from the LMP is known as Naegele's rule.
Step-by-step explanation:
Dating the EDD from the LMP is known as Naegele's rule. This rule is a way to estimate the expected due date of a pregnancy based on the date of the last menstrual period (LMP). According to Naegele's rule, you add 7 days to the first day of the LMP and count back 3 months to determine the due date. For example, if the LMP is January 1st, the estimated due date would be October 8th.