Chapter 14, Problem 2SC

The respiration reaction is shown below. Identify the oxidizing agent.

${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{6}}{\text{6O}}_{\text{2}}\to {\text{6CO}}_{\text{2}}{\text{+6H}}_{\text{2}}\text{O}$

$\begin{array}{l}\text{a}{\text{. C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{6}}\\ \text{b}{\text{. O}}_{\text{2}}\\ \text{c}{\text{. CO}}_{\text{2}}\\ \text{d}{\text{. H}}_{\text{2}}\text{O}\end{array}$