Which of the following is NOT a duty of an insurer regarding claims on file and record documentation?

The correct choice identifies a duty that is not typically required of insurers concerning claims on file and record documentation. Insurers are generally responsible for activities that directly relate to the handling of claims, such as maintaining accurate and organized claim data, recording important processing dates to ensure timely actions related to claims, and ensuring that claim files are accessible and legible for review.

Maintaining sales material that had an impact on claims does not fall under the standard duties of insurance companies related to claim processing. While sales materials can be informative during the underwriting or sales process, they are not a component of the claims management function. Insurers focus primarily on the processing and evaluation of claims based on documented evidence and records directly related to each claim. Thus, having sales material readily maintained for claims handling is not part of their essential responsibilities, which makes this option the outlier among the others listed.