The correct response is:
A It will increase.
Increasing the voltage in a circuit while keeping the same resistance (in this case, the light bulb) will increase the current according to Ohm's Law, which states \( I = \frac{V}{R} \) (where \( I \) is the current, \( V \) is the voltage, and \( R \) is the resistance). If the voltage is increased and the resistance remains constant, the current will increase.