Identify the true statement.
choose one:
a. water from rivers or rain tends to stay in a layer above saltier water for quite a while before it mixes.
b. saltier water generally floats above fresher water.
c. the boundary between surface-water salinities and deep-water salinities is called the thermocline.
d. when seawater evaporates, salt is removed in the vapor, leaving behind fresher water.

A

Explanation:

Salt water has a higher density compared to freshwater due to the salt particles this causes the salt water to sink and fresh water to float over it until the salt dissolves and mix

I think the answer is "A. Water from rivers or rain tends to stay in a layer above saltier water for quite a while before it mixes."

Explanation:

d is the logical answer but im not a 100% sure

моля да ми помогне с английски език аз не разбирам

molya da mi pomogne s angliĭski ezik az ne razbiram