Final answer:
The policyowner should choose the Joint and survivor option, which will pay the principal of the life policy to their children when they reach a certain age, and a portion of the proceeds annually to the spouse.
Step-by-step explanation:
The settlement option that the policyowner should choose is the Joint and survivor option. With this option, the principal of the life policy will be paid to their children when they reach a certain age, while a portion of the proceeds will be paid annually to the spouse.