Concept:The social security number is linked to contributions made during working life to provide income after retirement.Explanation:In Ghana, the social security number is issued and used by SSNIT to track a worker’s monthly contributions.When a civil servant retires, those recorded contributions are used to calculate and pay their monthly pension or retirement benefits.It is not mainly used for voting, opening bank accounts, or free healthcare.Answer:The correct option is D. It helps you to receive retirement benefits.