What will come to Chrissy's aid when it comes to understanding information on the chemical composition of the chemical peelst clients? A added certifications B. online etiquette C. practicing license D. material safety data sheet​

So what is the question

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

Answerboth technicians (a) and (b);