Which of the following best explains energy transformation in hydrogen fuel cells? Methane reacts with oxygen to produce carbon and hydrogen atoms, which releases energy. Hydrogen reacts with oxygen to produce water, which releases energy. In the presence of sunlight, carbon dioxide reacts with water to produce sugar and oxygen, requiring energy. Hydrogen chloride is dissolved in water, requiring energy.

Hydrogen reacts with oxygen to produce water, which releases energy.

Explanation:

In any fuel cell chemical bonds are formed and energy is released. It is a redox reaction. Bond energy is converted into electrical energy.

In the given option, first option is not possible because methane reacts with oxygen to give carbon dioxide and water.

third and fourth option are ruled out because chemical reactions are using energy. No energy is released. so they are not possible.