What is a characteristic of Medicare Supplement Policies (MSPs)?

Medicare Supplement Policies (MSPs) are specifically designed to help Medicare beneficiaries cover out-of-pocket costs that are not paid for by Medicare. This includes deductibles, copayments, and coinsurance for services covered under Medicare Parts A and B. Therefore, the primary characteristic of MSPs is that they supplement the original Medicare coverage and assist beneficiaries with their additional healthcare expenses.

The other potential characteristics mentioned, such as only covering hospital services or providing comprehensive dental coverage, do not accurately represent the nature of MSPs. MSPs focus on filling the gaps in Medicare coverage rather than offering standalone services like dental care or being limited to hospital services. By understanding this context, it becomes clear why the correct choice emphasizes their role in assisting with costs not covered by Medicare.