Chapter 17, Problem 13RA

Reabsorption of water through the tubules occurs by

$\begin{array}{l}\text{a}\text{. osmosis}\text{.}\hfill \\ \text{b}\text{. active transport}\text{.}\hfill \\ \text{c}\text{. facilitated diffusion}\text{.}\hfill \\ \text{d}\text{. all of these}\text{.}\hfill \end{array}$