The correct answer is C. Return of premiums.
A Return of Premium (ROP) plan is a type of life insurance policy that pays back the premiums you have paid into the policy, plus interest, when the policy matures. This means that if you die during the term of the policy, your beneficiaries will receive the sum insured, plus any interest that has accrued. If you live to the end of the term, you will receive the sum insured, plus any interest that has accrued, as well as the return of your premiums.
Option A is incorrect because the sum insured is the amount of money that will be paid out to your beneficiaries if you die during the term of the policy. Option B is incorrect because the sum insured plus bonus is the amount of money that will be paid out to your beneficiaries if you die during the term of the policy, plus any bonus that has been earned on the policy. Option D is incorrect because you will receive the return of your premiums, plus any interest that has accrued, if you live to the end of the term of the policy.