Final answer:
The ability to use a coupon and receive a senior discount simultaneously depends on a store's particular policy. Some may allow it, while others might not. Checking the store's terms and discount policy is recommended.
Step-by-step explanation:
Whether a customer can use a coupon and receive a senior discount on their bill depends on the store's or company's policy. Generally, some businesses allow customers to combine different types of discounts, while others may restrict the use of multiple discounts on the same purchase. It is best to check the terms and conditions of the coupon and the store’s discount policy. As this is a policy-specific question, there is no universally applicable answer. However, if the policy allows it, then the answer would be 'a. Yes'.