What type of contract may be terminated by the purchaser prior to the beneficiary's death, with a refund of the money paid?

The correct choice is a revocable contract. This type of contract allows the purchaser to terminate the agreement before the beneficiary's death and receive a refund of the money paid. The key feature of a revocable contract is that the party who purchases the contract retains the right to change their mind and withdraw from the agreement without penalty up to a certain point, which in this case is prior to the beneficiary's death.

In contrast, non-revocable contracts do not permit cancellation once made; therefore, the purchaser would not be able to receive a refund. Conditional contracts depend on specific conditions being met before they can be enforced, which does not apply in a straightforward cancellation situation. Permanent contracts typically imply a commitment for the entire duration of the contract without provisions for termination or refund, which would not align with the ability to receive a refund upon cancellation.