Which of the following reasons are associated with decrease in salinity of sea-water?

1.High temperature
2.High Humidity
3. Presence of winds
4. Presence of river water

Select the correct answer using the codes given below.
a) 4 only
b) 2 and 4 only
c) 2, 3 and 4 only
d) 1, 2, 3 and 4

Ans-[D] 

Explanation- High temperature and wind increases rate of evaporation which increases the salinity. Humidity has no impact on salinity. Presence of river water dilutes the saline concentration and thus, decreases salinity.