Question

how can we prevent a disease



1)by studying its mode of transmission

2)by knowing the diseases that spread in different seasons

3)by studying the life of cycle of pathogens

4)by taking precautions


a)2,3

b)1,3,4

c)1,2,3,4

d)2,4

Answer 1

Option 'c' is the tight answer.

Is it OK?

Plz comment me.

Answer 2

all way can be done . better answer will be 4 and 1