The percent change in mass is closest to 0% at which of the following approximate concentrations of the solutions?

(A) 0.01 M
(B) 0.25 M
(C) 0.3 M
(D) 0.45 M

A scientist studying osmosis placed six similarly sized pieces of potato in sodium chloride solutions of different concentrations and then measured the percent change in mass.

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Sodium chloride concentration 0.1 M 0.3 M 0.5 M 0.7 M 0.9 M 1.1 M % change in mass +17.5 +5.0 -7.5 -16.2 -26.1 -25.1