Question

hydrocarbons are the primary constituents of ______.
a fruit juices
b drugs
c fuels
d food flavors

Explanation:

Hydrocarbons are compounds consisting of hydrogen and carbon. Fuels like gasoline, diesel, and natural gas are mainly composed of hydrocarbons. Fruit juices contain water, sugars, vitamins, etc. Drugs have complex chemical structures beyond just hydrocarbons. Food flavors have various organic compounds but not hydrocarbons as the primary constituent.

Answer:

C. fuels