Which statement about convection is correct?

Multiple choice — select the best answer

AIt only occurs in solids
BIt transfers heat through a vacuum
CIt transfers heat by the circulation of heated gases or liquids
DIt requires direct surface contact

✓ Correct answer: C. It transfers heat by the circulation of heated gases or liquids Convection moves heat through the circulation of heated fluids (gases or liquids). It does not require direct solid contact and cannot occur in a vacuum.

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Which statement about convection is correct?

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