What is concentrated salt solution added to the tube with the cheek cells?

Adding a concentrated salt solution to the solution containing cheek cells will cause the water to move outside the cells by osmosis. The cheek cells are at a higher water potential than the outside solution so, the water will move out, down the water potential gradient, until an equilibrium is reached.

Hope that answers the question, have a great day!

the answer would be b i believe

you need to have a picture of the atom that way we can answer it