A nurse is using Naegele's rule to calculate the estimated due date of a client who reports that the first day of their last menstrual cycle was July 21st. Which of the following should the nurse document as the client's expected due date?

Step 1 is: Start with the first day of the last menstrual period (LMP): July 21st. Step 2 is: Subtract 3 months: July minus 3 months is April. Step 3 is: Add 7 days to the LMP day: 21 plus 7 days is the 28th. Step 4 is: Add 1 year: April 28th of the following year. Final calculated answer: April 28th.