Select the crops which serve as vegetative barriers against soil erosion
I. Vetiver II. Agave III. Cenchrus grass

Correct option is D

Vegetative barriers reduce runoff and soil loss.
Vetiver has deep roots and strong soil binding ability.
Agave is drought tolerant and used on bunds.
Cenchrus grass forms dense ground cover.
All three are effective vegetative barriers.
Hence, all statements are correct.
Therefore, option (d) is correct.