Answer:
benefits that accrue to those who don't pay.
Explanation:
Market failure associated with the free-rider problem is a result of benefits that accrue to those who don't pay. This is because the free-rider problem arises on a shared resource that is created by its overuse by various individuals who are not contributing their fair share for it, yet those very same people are still receiving all the benefits provided by that resource, while others need to pay for it.
