In insurance policies, the insured is not legally bound to any particular action in the insurance contract, but the insurer is legally obligated to pay losses covered by the policy. what contract element does this describe?

Unilateral is the contract element described here.

Explanation:

Insurance policy is a contract made between the insurer, insure and the insured.

Unilateral contract element is generally one-sided. In unilateral contract the enforceable promises are made by only one party.

The insurance contract is accepted only when the insurance company accepts a prepaid application that is the insurance fee should be paid in advance of the coverage period. Under unilateral contract, the one who purchases the insurance policies is not legally guaranteed to any particular action mentioned in the insurance contract, but the insurance company is legally responsible to pay the losses that are covered by the policy.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail