UPSC Prelims GS - 2018

Question 99
MEDIUMCorrect: +2Incorrect: -2

Consider the following
1. Birds
2. Dust blowing
3. Rain
4. Wind blowing
Which of the above spread plant diseases?

    a
    1 and 3 only
    b
    3 and 4 only
    c
    1, 2 and 4 only
    d
    1, 2, 3 and 4