What do we call an agreement between the insured and the insurer in which certain conditions must be met?

The correct choice is a warranty. In insurance, a warranty is a specific type of promise made by the insured to the insurer that certain conditions will be met throughout the life of the policy. This may involve maintaining specific safety standards or undertaking certain actions to mitigate risks. The violation of a warranty can lead to the insurer being able to refuse coverage, making it a critical aspect of the contract between the insured and the insurer.

A contract generally refers to the broader legal agreement between two parties, which encompasses the entire insurance policy, including its terms, conditions, and exclusions. Meanwhile, a policy is a document that outlines the terms of coverage that the insurer provides to the insured, detailing what is and isn't covered.

An endorsement is an addition or modification to an insurance policy that changes its terms or coverage without completely rewriting the policy. Endorsements can enhance or limit coverage, but they do not establish the fundamental promises made by the insured which a warranty does. Thus, the focus on meeting specific conditions aligns most closely with the definition of a warranty.