Carbohydrates are an important macronutrient for fueling muscles. during exercise, where can the body obtain carbohydrate?

Glycogen stored in muscles

Glycogen stored in the liver cells

Glucose that is available in the bloodstream

Explanation:

Carbohydrate is the class of food in which its digestion starts in the mouth. The end product of the digestive breakdown is Glucose. Excess glucose formed is usually stored as glycogen in liver and muscle cells.

The readily available source of glucose for working muscles is glycogen that is stored in muscles which is broken down back into glucose. The liver also helps supply glucose for muscles by degrading glycogen and releasing glucose molecules into the bloodstream.

i think the answer is b.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.