Answer:
The correct option is D. Catabolism is to anabolism as exergonic is to endergonic.
Explanation:
An exergonic reaction is can be described as a type of reaction in which energy is released. Catabolism is also a process in which larger molecules break down and energy is released.
An endergonic reaction can be described as a reaction in which energy is needed. The anabolic reaction is a kind of reaction in which energy is required for two smaller molecules to join and make a bigger molecule.
Hence, catabolism is similar to exergonic and anabolism is similar to endergonic. So, D is the correct option.