In regard to endorsements, what can they do to a policy?

Endorsements are modifications made to an insurance policy that can adjust the original terms or coverages. This means that they can add, remove, or alter specific coverages, conditions, or limits of the policy without having to rewrite the entire contract. For example, if an insured wants to include additional coverage for specific personal property, an endorsement can be issued to modify the policy accordingly.

Other options may touch on various features or effects of a policy but do not specifically embody the primary function of endorsements. While endorsements can be related to changes in coverage duration or premium schedules, their main role is to refine the coverage details as stated within the original policy, thus making option B the correct understanding of what endorsements can do.