Final answer:
If the premium-paying period is shorter, the premium would be lower for an insurance policy.
Step-by-step explanation:
If the premium-paying period is shorter for an insurance policy, generally option c) lower the premium would be the correct completion of the sentence. This means that the insurance premium, or the amount that the policyholder pays for the insurance coverage, would be lower if the premium-paying period is shorter.
The shorter period results in a decreased amount of time over which the premium is divided, ultimately reducing the overall cost of the premium.