UPSC 2020 - Question 90

In the context of India,

which of the following is/are considered to be practice(s) of eco-friendly agriculture?

1. Crop diversification

2. Legume intensification

3. Tensiometer use

4. Vertical farming

Select the correct answer using the code given below:

a. 1, 2 and 3 only

b. 3 only

c. 4 only

d. 1, 2, 3 and 4