What energy transfer is occurring when a battery-powered toy rolls across the floor? a Stored mechanical energy is converted to thermal energy. b Stored mechanical energy is converted to mechanical energy. c Stored chemical energy is converted to thermal energy. d Stored chemical energy is converted to mechanical energy.

The correct option is;

d Stored chemical energy is converted to mechanical energy

Explanation:

Energy is stored in a battery in the form of electric potential energy. The chemical in a battery are such that they have an electric potential between them when charged and when the terminals of the battery are connected to an external circuit, the potential difference between the compounds at the poles causes electric current to flow from one pole, across the circuit and enter back into the battery through the other pole

The energy of the moving electrons can then be used to do mechanical work such as causing the mechanism of a coil in a magnetic field to rotate. The rotation can then be used to turn the wheels of the toy using gears.

if you're asking what comes out, it's steam.

it is the most commonly accepted one