_______ is the irrigation method suitable for undulating lands and sandy soils.

Correct option is B

✔️ Correct Answer: (b) Sprinkler
· Sprinkler irrigation is ideal for undulating terrains and sandy soils where conventional surface irrigation methods are inefficient.
· It distributes water uniformly across the field and reduces runoff losses on uneven land.
· It also works well in sandy soils, where water infiltration is high and rapid application can lead to deep percolation losses.
❌ (A) Border strip: Requires levelled fields and is unsuitable for undulating terrain. ❌ (C) Check basin: Best for clayey soils and flat lands, not for sandy or uneven areas. ❌ (D) Furrow method: Common for row crops but not ideal for highly permeable sandy soils or hilly areas.