For a fuel to burn completely, a sufficient quantity of oxygen is essential as it facilitates the combustion reaction. Incomplete combustion occurs without enough oxygen, resulting in harmful byproducts. Understanding this concept is crucial in various applications, such as engine design and pollution control. ;
For a fuel to burn completely, a sufficient quantity of oxygen is necessary for the combustion process. Incomplete combustion occurs without enough oxygen, producing harmful byproducts. Therefore, the correct answer is option A: oxygen.
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