Abus engine transfers chemical potential energy into so that the bus moves.

a. kinetic energy
b. thermal energy
c. gravitational potential energy
d. electrical energy
(i don't know is it is kinetic energy or electrical energy)
you : )

option (a)

Explanation:

According to the energy conservation law, the energy can neither be created and nor be destroyed, it can transform from one form to another.

In case of bus engine, the chemical energy of fuel is converted into heat energy and then kinetic energy so that the bus can move. So, the chemical potential energy is converted into kinetic energy.