Which of the following explains why the volume of chondroitin sulate is greater in solution compared to when it is a dehydrated solid?
a. Chondroitin sulfate is a nonpolar molecule
b. Solubilized chondroitin sulfate contains negatively charged groups that repel one another
c. Solubilized chondroitin sulfate contains positively charged groups that repel one another
d. Solubilized chondroitin sulfate contains both positively and negatively charged groups that attract one another