Question

curious carl and his lab partner were burning various fuels: sucrose, paper, and methane, in oxygen and predicting the products. assuming sufficient oxygen and complete combustion, each combustion reaction produced
a carbon dioxide.
b carbon and water vapor.
c water and carbon dioxide.
d water and carbon monoxide.

Explanation:

The fuels (sucrose, paper, methane) are hydrocarbons or contain carbon and hydrogen (sucrose has C, H, O). Complete combustion of such fuels in sufficient oxygen produces carbon dioxide ($\ce{CO_2}$) and water ($\ce{H_2O}$). Option A has only $\ce{CO_2}$, B has carbon (incorrect, should be $\ce{CO_2}$) and water vapor (water is correct but form misrepresented), D has CO (incomplete combustion product). So C (water and carbon dioxide) is correct.

Answer:

C. water and carbon dioxide.