Question

what type of solution is this cell in? image of a red blood cell labeled normal with h₂o arrows options: hypertonic, diffused, hypotonic, isotonic

Explanation:

In the diagram, water ($\ce{H_{2}O}$) is moving into and out of the red blood cell, and the cell appears normal. An isotonic solution has equal solute concentration inside and outside the cell, so there is no net movement of water that would change the cell's shape. Hypertonic would cause water to leave (cell shrinks), hypotonic would cause water to enter (cell swells), and "diffused" is not a solution type. So the cell is in an isotonic solution.

Answer:

Isotonic (the green - colored option with the label "Isotonic")