Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine the neutral choice based on your inference from the statement and your commonsense knowledge. The neutral choice is a sentence that neither agrees nor disagrees with the statement. Indicate your answer as '1', '2', or '3', corresponding to the choice number of the selected sentence. If sentence X agrees with sentence Y, one's correctness follows from the other one. If sentence X disagrees with sentence Y, they can not be correct at the same time.
Input: Statement: This eerie lake, shimmering in the heat, is so heavy with salt and other minerals that nothing lives in its waters; swimmers find it almost impossible to sink or even to submerge themselves. Choices: 1. They've tested the salinity of the water and it was unusually high, so high that there are no signs of life in it whatsoever. 2. The salinity of the lake is extremely high that swimmers aren't able to sink in it. 3. People aren't sinking in that lake because it's shallow.

1