Glycogenesis:a. involves transfer of glucose from CDP‑ glucose to a non reducing end of a glycogen chain. b. involves the action of glycogen debranching enzyme. c. occurs only in the liver and muscle. d. begins the production of a new glycogen molecule with the reactions of glycogenin.

The correct answer is option d. "begins the production of a new glycogen molecule with the reactions of glycogenin".

Explanation:

As the name implies, glycogenesis is the process at which glycogen is synthesized. This process takes place by binding and addition of multiple glucose molecules. Glycogenesis begins the production of a new glycogen molecule with the reactions of glycogenin, an enzyme that acts as a primer and catalyzes the polymerization of the first few glucose molecules.