UPSC Prelims GS - 2020

Question 70
MEDIUM
Correct:
+2
Incorrect:
-2

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