You are a new firefighter and are determined to demonstrate to your crew that you are capable of performing your duties. You and your crew arrive at a structure fire incident on a very hot, summer day. You exit the engine and begin to perform your fire suppression duties. About ten minutes into the fire extinguishment you realize that you are starting to feel dizzy and worry that you might pass out. How would you handle this situation?

A. Do you best to push through the illness because you have a very important job to do but mention how you feel to another firefighter.
B. Quickly return to the engine to get a bottle of water and rehydrate and return to the assignment before anyone notices.
C. Inform your captain that you feel like you might pass out and may need to exit the fireground.
D. Try to limit the amount of physically-demanding activities you do but stay on the fireground with your crew.

What is the MOST appropriate response?