In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
My husband has listed me as the ________ of his life insurance policy.

* Beneficiary means a person who derives advantage from something, especially a trust, will, or life insurance policy. This is the exact legal and contextual term used for insurance policies.
Successor means a person or thing that succeeds another (like taking over a position or office).

Heir means a person legally entitled to the property or rank of another on that person's death.

Inheritor means a person who inherits something.

Therefore, 'beneficiary' is the most appropriate word.