Happy Seeder generally fulfils

A. Only one principle of Conservation Agriculture

B. Only two of the principles of Conservation Agriculture

C. All three of principles of Conservation Agriculture

D. Nothing to do with Conservation Agriculture

Answer: Option B

Solution(By Examveda Team)

A happy seeder is a tractor-mounted machine that cuts and lifts rice straw remains after harvesting, sows wheat seed into the soil and again covers the field by putting straw over the sown area as mulch.
So, it fulfills only two principles of C. A. (Conservation Agriculture), i.e., tillage and mulching.