A heterotroph:

Answer: [B] obtains its energy by oxidizing organic molecules

A heterotroph obtains its energy from organic molecules. An autotroph obtains energy from sunlight utilizing pigments including chlorophyll (A) and uses CO2 and water to make organic molecules. heterotrophs can obtain their energy from ingesting autotrophs, but can also consume other heterotrophs.

This question is a part of GKToday's Integrated IAS General Studies Module