Question

As salinity increases:

density increases
electrical conductivity decreases
amount of salt (NaCl) increases
all of the above

Answer 1

@Hoslos would this be the third one?

Answer 2

@IrishBoy123 what do you think

Answer 3

all

pure water does not conduct, its ions conduct

certainly denser - eg Dead Sea

and c clearly true too..

Answer 4

The correct ones would be the first and the third.
Not the second, because as salinity increases, it means the concentration of the ions is greater and they are expected to conduct more electricity.