To create an acrostic to remember the names of the months with 30 days (April, June, September, and November), we can use the first letter of each month: A (April), J (June), S (September), N (November).
Among the given choices, the option that satisfies this request is:
A.J.S.N.
This correctly uses the first letters of the months in the order they occur: A (April), J (June), S (September), N (November).