Final answer:
The arrangement where one party indemnifies another for a loss in return for regular payments is called insurance, where premiums are paid to cover potential financial damages from specific events.
Step-by-step explanation:
When one party agrees to indemnify another for a named loss in return for periodic payments, it is called insurance. This method of protecting a person from financial loss involves policyholders making regular payments to an insurance entity.
In exchange for these payments, known as premiums, the insurance firm compensates a group member who incurs significant financial damage from an event covered by the policy.
This mechanism helps manage risk by spreading the potential financial burden across a risk group.