Q.All-weather road connectivity for unconnected rural habitations in India is provided mainly under which of the following schemes?

Several central schemes serve rural India, each targeting a different piece of infrastructure or livelihood support — this question tests whether the correct scheme is matched to "roads". …

Why (b) is correct: The Pradhan Mantri Gram Sadak Yojana was launched specifically to provide all-weather road connectivity to unconnected rural habitations, directly supporting farm-to-market transport and access to schools and health facilities.

Why the others are wrong:

• (a) e-NAM is an electronic trading platform linking APMC markets — it concerns agricultural marketing, not road construction.
• (c) NRLM (Aajeevika) promotes rural livelihoods through Self-Help Groups and credit/skill linkage — it is a livelihood-promotion programme, not an infrastructure scheme for roads. …

Students sometimes lump all central rural schemes together without distinguishing which specific infrastructure or livelihood need each one targets — matching the scheme name to its actual, …