Final answer:
To activate the reinstatement clause of a lapsed life insurance policy, the insured must remit all past-due premiums within the grace period.
Step-by-step explanation:
In order to activate the reinstatement clause of a lapsed life insurance policy, the insured must remit all past-due premiums within the grace period. This means that the insured needs to pay all the premiums that were missed during the period of lapse. By doing so, the policy will be reinstated.