Among the battery, the motor, and the light bulb, what are the causal relations?  Check ALL that apply.
1
The battery is a direct cause of the motor.
The battery is a direct cause of the light bulb.
The motor is a direct cause of the battery.
The motor is a direct cause of the light bulb.
The battery is an indirect cause of the light bulb.
The motor is an indirect cause of the light bulb.