D is the best option, that's the part that absorbes food and water
B.) Blood Vessels.
The circulatory system deals with anything that circulates blood throughout the body to distribute Oxygen into different parts of the body.
Answer: B) thiamin
Explanation:
Thiamine (vitamin B1) acts on carbohydrate, fat and protein metabolism, acting as a coenzyme - thiamine diphosphate. This , in combination with phosphorus, forms coenzyme thiamine pyrophosphate (TPP), which is the key to various reactions such as the transformation of glucose into energy (ATP). TPP acts as a coenzyme in the oxidative decarboxylation of pyruvate, forming acetate and acetyl coenzyme A that is required for carbohydrate, fat and protein metabolism.
I believe it's A Because because a physical therapist has a degree on what's best and safe way to exercise.
