Answer:
Your answer would be C because freezing glaciers don't have enough low salinity to make the ocean salinity decrease. It would not be high rates of evaporation either because it would take away the water and not the salt so this would be correct if the question was asking what would increase the salinity of the ocean. A river flowing into the sea would add water but then would get evaporated soon enough not really causing less salinity. That being said your answer is C.
Explanation:
The answer is C because the water on top of the ocean has very low salinity. Therefore, extremely hot whether would then decrease the salinity of the ocean making it less salty. The other options are wrong but close. So don't get confused. But extremely hot whether would heat up the salt causing it to melt away. Therefore your answer is C.
Hope I helped! : )
