Answer:
The first one.
Explanation:
The goal of a first sentence is to open and explain why this is happening so the first would be the best answer.
It’s C (if this one is wrong then I’m sorry)
1. Most is describing the amount of water
2. Salty continues to refer to the water
3. Frozen is also describing the water.
4. Only is refering to percentage
5. Tiny is talking about percentage