83. To enroll in Medicare Part C, an individual must:

Answer: D

Explanation:

To enroll in Medicare Part C, an individual must already be enrolled in both Medicare Parts A and B.

Enrollment in Medicare Part C, also known as Medicare Advantage, requires individuals to be enrolled in both Medicare Parts A and B. This ensures that beneficiaries have comprehensive coverage before receiving additional benefits through a Medicare Advantage plan.

A) also enroll in Medicare Part D

While individuals can choose to enroll in Medicare Part D for prescription drug coverage, it is not a requirement for enrolling in Medicare Part C. Therefore, this option is incorrect regarding the prerequisites for Medicare Part C enrollment.

B) have an annual income under $15,000

There are no income restrictions for enrolling in Medicare Part C based solely on an annual income threshold of $15,000. This option is misleading, as eligibility primarily hinges on enrollment in Medicare Parts A and B rather than income levels.

C) already be enrolled in Medicare Part A only

Enrollment in only Medicare Part A does not satisfy the requirement for Medicare Part C. Individuals must be enrolled in both Medicare Parts A and B to qualify for Medicare Advantage plans, making this option incorrect.

D) already be enrolled in both Medicare Parts A and B

This is the correct answer, as Medicare Part C enrollment indeed requires individuals to have both Medicare Part A and Part B. This combination allows beneficiaries to access the additional benefits provided by Medicare Advantage plans.

Conclusion

In summary, the requirement to be enrolled in both Medicare Parts A and B for Medicare Part C enrollment is essential for accessing the comprehensive coverage that Medicare Advantage plans offer. Options A, B, and C fail to meet this fundamental requirement, solidifying D as the definitive correct answer.