When the solute concentration of the cell and its surrounding medium are the same, the solution is said to be

A.

hypertonic

B.

hypotonic

C.

isotonic

D.

acidic

Correct answer is C

Option C is correct because when a cell is isotonic, it doesn't lose water into the surrounding medium or take it in. An isotonic solution essentially implies that there is balance between the cell and the surrounding medium.