Step 1: Understanding the Concept:
The Pradhan Mantri Gramin Sadak Yojana (PMGSY) is a nationwide plan in India to provide good all-weather road connectivity to unconnected habitations in rural areas.
It is a crucial centrally sponsored scheme for rural development and poverty reduction.
Step 2: Detailed Explanation:
Let us analyze the statements individually:
- Statement A: PMGSY was launched on 25th December 2000 by the Government of India. This statement is correct.
- Statement B: Its primary objective is to provide single all-weather road connectivity to eligible unconnected habitations. This statement is correct.
- Statement C: While PMGSY has launched multiple phases (PMGSY-I, PMGSY-II, PMGSY-III), they are running concurrently in several states due to varying completion rates. Technically, stating that two phases are fully completed in all respects nationwide is not completely accurate as execution timelines overlap.
- Statement D: Cumulatively, by late 2020 and early 2021, the scheme had successfully completed more than 6.44 lakh km of road length. This statement is correct.
Therefore, statements A, B, and D are extremely robust and widely accepted as correct.
Step 3: Final Answer:
The correct combination is A, B, and D only, which corresponds to Option (D).