Final answer:
Coinsurance is a mechanism in insurance where the policyholder pays a certain percentage of a loss, and the insurance company pays the remaining cost. It encourages policyholders to buy insurance coverage in close relation to the value of the loss.
Step-by-step explanation:
Coinsurance is a mechanism in insurance where the policyholder pays a certain percentage of a loss, and the insurance company pays the remaining cost. It is an arrangement that encourages the policyholder to have insurance coverage in close relation to the value of the loss. The policyholder must bear a part of the loss, known as coinsurance, before the insurance coverage begins to pay.