Final answer:
The range of light hydrocarbons in lighter oils is a) C5 to C10. These oils contain hydrocarbon chains with 5 to 10 carbon atoms.
Step-by-step explanation:
The range of light hydrocarbons in lighter oils is a) C5 to C10. Lighter oils contain hydrocarbon chains with 5 to 10 carbon atoms. For example, octane (C8H18) is a common hydrocarbon found in lighter oils and is commonly used in gasoline. Longer chains of hydrocarbons are found in lubricants, tar, and as feedstock for plastics.