Explanation:

- The Pradhan Mantri Awas Yojana - Gramin (PMAY-G) aims to provide affordable housing to the rural poor and has been extended several times since its inception in 2016.

- Originally scheduled to end in 2018, the completion goal was then moved due to the vast number of houses yet to be constructed.

- The scheme is now targeted to be implemented until March 2024 for completing around 2.95 crore houses by 2024.

- While there is no specific mention of the scheme extending to 2025, talks and plans often evolve.

- 2023 marks years of progress but not the final implementation year.

- Hence, the closest given option to the known implementation timeline is Option:3, 2025.

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