A student conducted an experiment by placing a plant cell in a salt solution and the following observation is observed. What is the best explanation of the net movement of molecules? A normal plant cell is on the left. The plant cell wall is visible, and the internal structure fills the cell up to the cell wall. In the middle is an arrow pointing from left to right. On the right is a plant cell. This plant cell has a cell wall the same size as the first plant cell, and the internal structure appears to be the same. a Water is moving out of the cell at a faster rate than it is moving in. b Water is moving into the cell at a faster rate than it is moving out. c Water is moving at equal rates both in and out of the cell. d Water is neither moving in nor moving out of the cell.