Identify the main enrollment periods for MA/Part D and the key timing for each.

• A. Initial Enrollment Period around when eligible for Medicare; Annual Election Period Oct 15–Dec 7; General Enrollment Period Jan 1–Mar 31; Special Enrollment Periods triggered by life events.
• B. Only AEP matters; others are not.
• C. IEP occurs every year in October.
• D. SEP is only for people in long-term care; Not.

Answer: (A)

Enrollment periods govern when you can sign up for Medicare Advantage and Part D or change plans without penalties. The key periods are the Initial Enrollment Period, the Annual Election Period, the General Enrollment Period, and Special Enrollment Periods.

The Initial Enrollment Period is the seven-month window around when you become eligible for Medicare—typically the three months before your 65th birthday, the month you turn 65, and the three months after. This is when you first enroll in MA and/or Part D without penalties or late enrollment issues.

The Annual Election Period runs every year from October 15 through December 7. During this time you can enroll in, switch, or drop MA or Part D plans for the next year.

The General Enrollment Period is January 1 through March 31 for people who did not enroll during their IEP or AEP; coverage often starts July 1.

Special Enrollment Periods occur when you have a life event that qualifies you for a change outside the usual windows—for example losing other coverage, moving, or entering a long-term care facility.

So, the option listing all four with their respective timings—Initial Enrollment around eligibility, AEP October 15–December 7, GEP January 1–March 31, and SEPs triggered by life events—best captures the main enrollment periods and their timing.