Answer:
Life insurance.
Step-by-step explanation:
Life insurance is defined as a contract that is raised between an individual and an insurance company that guarantees the payment of a particular amount tonthe individual's beneficiary in the case of death. The insurance policy requires premium to be paid on agreed intervals.
Stan and Heidi are both having caterers in business, and death of one of them will lead to decreased income.
To guard against this the couple can purchase a life insurance that will pay beneficiary a guaranteed sum in case of death of one of the partners.
This will ensure there is no sudden drop in their income.