Which of the following is NOT a responsibility of the insurance adjuster?

The choice that represents a role not typically associated with the responsibilities of an insurance adjuster is indeed related to deciding on insurance rates. Insurance adjusters primarily focus on evaluating claims once they are filed, which involves tasks such as assessing policy limits and deductibles, determining the validity of claims, and investigating the details surrounding the claims. Their goal is to ensure that the claims process is fair and accurate, based on the terms of the insurance policy.

On the other hand, deciding on insurance rates falls under the purview of underwriters and actuaries, who assess risk and calculate premiums based on a variety of factors before a policy is issued. Therefore, this function does not fall within the typical duties of an adjuster, making it the correct answer to this question.