2. most of the water and other substances dissolved in the plasma returns to circulation during the process of a. filtration b. reabsorption c. secretion d. all of the above

b. re-absorption

Explanation:

Most of the water and other substances dissolved in the plasma returns to circulation during the process of re-absorption.

Re-absorption refers to the mechanism by which solutes and water moves out of the glomerular filtrate and back into the bloodstream.