If a shop must keep cash left overnight in a safe under its insurance policy, this requirement is an example of what?

The requirement for a shop to keep cash left overnight in a safe under its insurance policy is an example of an express warranty. An express warranty is a specific condition or requirement clearly stated within the insurance contract that must be fulfilled for the policy to remain valid. In this case, the insurer explicitly states that cash must be secured in a safe, indicating the expectation that this condition is part of the insurance agreement. If the insured does not comply with this condition, it could potentially lead to a denial of coverage in the event of a claim related to theft or loss of the cash.

This contrasts with other types of warranties, such as implied warranties, which are not explicitly stated in the contract but are understood to exist based on the nature of the agreement or the law. Collateral warranty relates to secondary assurances that are not central to the main contract, while contingent warranties depend on specific events occurring. The precise and articulated nature of the requirement to keep cash in a safe is why it is classified as an express warranty.