Final answer:
An electric car transfers electrical energy to mechanical energy in order to move. This transition is facilitated by an electric motor, which converts the car's battery power into motion.
Step-by-step explanation:
An electric car uses a battery to power an electric motor, which then makes the car move. The type of energy transition happening in the car is from electrical energy to mechanical energy. This process involves converting the stored chemical energy in the battery into electrical energy, which is then used by the electric motor to generate mechanical energy, propelling the car forward.
An electric motor, according to the reference provided, transforms electrical energy into mechanical energy. Similarly, in energy conversion processes such as those in solar cells, electrical energy can be used to power an electric motor, translating the electrical energy into mechanical energy. Therefore, the correct answer to the original question is B. Electrical energy to mechanical energy.