Step 1: National Demonstration Project started around 1964-65, so (A) pairs with (III).
Step 2: Drought Prone Area Development Programme started 1970-71, so (B) pairs with (IV).
Step 3: IRDP went nationwide in 1978-79, so (C) pairs with (II); the first KVK opened in 1974, so (D) pairs with (I).
Correct option: (A)-(III), (B)-(IV), (C)-(II), (D)-(I).