Define catabolism and give a simple example of a catabolic reaction in the body.

A) Catabolism is the breakdown of complex molecules into simpler ones, such as the conversion of glucose to pyruvate during glycolysis.
B) Catabolism is the synthesis of complex molecules from simpler ones, such as the formation of proteins from amino acids.
C) Catabolism is the breakdown of simple molecules into complex ones, such as the synthesis of glucose from pyruvate during gluconeogenesis.
D) Catabolism is the breakdown of fats into fatty acids and glycerol, which are then used for energy production.