A car engine uses the combustion of fuel to move a system of gears that move its wheels. Not all of the fules energy is transferred to the wheels. Which two options describe what happens to the rest of the energy.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

its b it was a compound