Answer:
(B) Catabolic pathways.
Explanation:
Catabolic pathway is the breaking down or degradation of complex molecules into simple molecules. Catabolic pathways are exergonic reactions because in the process of degradation, energy stored in these complex molecules is released. These reactions are spontaneous.
Examples of catabolic pathways are glycolysis, citric acid cycle, the breakdown of fat in adipose tissue to fatty acids, etc.
