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skyluke89
The correct answer is B. cold water with high salt content
Let's see why:
- First of all, cold water is more dense than warm water. In fact, in warm water molecules move faster, so there is (on average) a larger separation between them, therefore the liquid is less dense when it is warmer
- Secondly, water with high salt content is more dense than water with no salt: in fact, salt is more dense then water, therefore if we add salt in the water, this water will be for sure more dense than pure water.
Putting togethere these two pieces of information, we can state that the correct answer is B. cold water with high salt content.

Answer:

B. cold water with high salt content.

Explanation:

cold water is more dense than warm water because hot water molecules move faster than molecules of cold water.

High salt content is more dense than water with no salt: in fact, salt is more dense then water,

So, Cold water and salty water  both have high density.

Therefore, B. cold water with high salt content.

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