Concept:A marine fish cannot survive in fresh water because its body cells are hypertonic to the surrounding fresh water.
Explanation:In sea water, the fish’s body fluids are balanced with the salty environment.
Fresh water, however, has a much lower solute concentration, making it hypotonic compared to the fish’s body cells.
By osmosis, water moves from the fresh water into the fish’s body.
This causes the body cells to absorb too much water, swell, and eventually burst.
The fish dies because its cells are damaged by excessive water intake, not because of tank size or lack of food.
Answer:B. the body cells of the fish swelled and burst as a result of the hypotonic fresh water.