ANSWER
B. It is turning humid
EXPLANATION
We want to identify what is happening if there is an increase in the rate at which water moves from the hydrosphere to the atmosphere at a particular location.
When water moves from the hydrosphere to the atmosphere, it implies that there will be more water in the atmosphere at that particular location. The presence of water (vapor) in the atmosphere is referred to as humidity.
Hence, if the rate at which water moves to the atmosphere increases, it means that the humidity is also increasing.
Therefore, the location is turning humid.
