Alawnmower runs on gasoline. what type of energy transformation takes place in its engine?

Distance and velocity graph

Answerlimiting reactant;

Well you can immediately rule out a and d because if a metal were to lose or gain protons, then it would become a different element all together. the answer here is b because the positive symbol with a number refers to how many electrons the metal can give away to become stable.

It is kept in an engine.hope it