Which option is an element? A. Carbon dioxide

B. Carbon

C. Air

D. Water

Carbon is an element so answer choice B.

The correct answer is carbon and the only element listed. Carbon Dioxide is made up of Carbon and Oxygen x2. This would be a compound. Air is made of water and another mixture of Hydrogen x2 and Oxygen.

Hope this helped! :))

The correct answer is c. hope this

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