Final answer:
For each molecule of butene that reacts, four molecules of carbon dioxide and four molecules of water are produced, making the correct answer option B.
Step-by-step explanation:
The unbalanced equation for the oxidation of butene is being considered. After balancing the equation, it becomes evident that for each molecule of C4H8 that reacts, four molecules of CO2 (carbon dioxide) and four molecules of H2O (water) are produced.
The balanced chemical equation, therefore, reveals that the correct answer is four carbon dioxide molecules and four water molecules are produced for each molecule of butene.