Explanation:

- Option 1: Personal right

- A widow's right of retention for non-payment of dower is considered her personal right.

- This right allows her to retain possession of her husband's property until the dower is paid.

- ?? Answer: This is the correct option.

- Option 2: Religious right

- While dower has religious significance in Islam, the retention right itself is more of a legal aspect.

- It equates to a security interest in property, rather than a religious entitlement.

- Option 3: Old tradition of Muslims

- The practice has historical roots in Islamic tradition, but it is formalized in legal systems now.

- Not merely a tradition, it is codified law in many jurisdictions.

- Option 4: Right given under Dissolution of Muslim Marriage Act, 1939

- This Act is more about divorce and ancillary matters.

- It doesn't specifically address the widow’s right of retention for dower.

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