A hiker has become overwhelmed with heat while walking in the Grand Canyon. The hiker's body goes into overdrive to keep cool in the heat. The hiker needs to hydrate his or her cells. What process is used to regulate homeostasis?

A. Balanced equilibrium

B. Cellular transport

C. Hydration

D. Passive transport

Answer: A. Passive transport

Explanation: Cell transport is the exchange of substances through the plasma membrane

The passive transport allows the molecular passage through the membrane in favor of the gradient of concentration or electrical charge, that is to say that it transports values of greater concentration at lower concentration, as it happens in the osmosis process where a transport of molecules of water mediated by specific proteins in favor of its concentration gradient.