Which concept states that the insured is entitled to the coverage under a policy that a sensible and prudent buyer would expect it to provide?

Indemnity refers to the principle that an insured party is compensated for their loss, restoring them to their financial position prior to the loss. While this concept is fundamental in insurance, it does not address the expectations of coverage that a prudent buyer would have. Instead, it focuses on the compensation aspect post-loss, making it less relevant to the insured's expectations at the time of purchasing the policy.

Comity is a legal doctrine that refers to the mutual recognition of legislative acts, judicial decisions, and administrative orders of different jurisdictions. This concept does not pertain to the expectations of insurance coverage and is not relevant in the context of determining what an insured person should reasonably expect from their policy.

Subrogation is the process by which an insurer can pursue a third party responsible for a loss after compensating the insured. This concept relates to the insurer's right to recover costs but does not involve the insured's expectations regarding coverage. Thus, it is not applicable to the question about what a reasonable buyer would expect from an insurance policy.