What is an example of an unfair claims settlement practice?

The correct choice highlights an unfair practice by requiring proof of loss for each claim, which could impose an unreasonable burden on the policyholder. Generally, the claims process should be straightforward, and while some proof may be necessary, mandating proof for every claim can hinder the policyholder's ability to receive benefits. This practice could be seen as unduly complicated, preventing claimants from accessing their rightful coverage efficiently, thus compromising the overall obligation of the insurer to provide timely and fair service.

The other options describe practices that might also be seen as unfair, but they do not relate to a mandatory requirement that might inhibit a policyholder's ability to have their claims processed. For example, offering lower settlements than market value is problematic because it does not reflect the actual value of the loss, while denying claims without explanation can leave claimants in the dark and questioning the validity of the decision. Similarly, delaying response time for inquiries can frustrate claimants and contribute to a sense of helplessness, but these practices do not impose a specific undue requirement like mandatory proof for every claim.