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Verbal·Expression of Ideas·Rhetorical Synthesis
easy
While researching a topic, a student has taken the following notes:
  • Freezers and other cooling technologies use chemical compounds called refrigerants to absorb heat and release cold air.
  • When a refrigerant absorbs heat, it undergoes vaporization, changing from a liquid to a gas.
  • When it cools, it undergoes condensation, changing from a gas to a liquid.
  • The refrigerant tetrafluoromethane is a perfluorocarbon (PFC).
  • PFCs are composed of the elements fluorine and carbon.
The student wants to describe the role of refrigerants in freezers. Which choice most effectively uses relevant information from the notes to accomplish this goal?
A
The refrigerant tetrafluoromethane, used in freezers, is made up of fluorine and carbon.
B
Freezers can absorb heat and release cold air through vaporization and condensation.
C
Used in freezers, refrigerants such as tetrafluoromethane can change from a gas to a liquid and back.
D
Freezers use refrigerants like tetrafluoromethane to absorb heat and release cold air.