The brightness of the light bulb in this scenario depends on the voltage provided to the bulb, which, in turn, depends on the arrangement of the batteries and wires.
A. 1 battery:
The bulb will shine with the voltage provided by a single battery.
B. 2 batteries connected with a long wire:
Connecting batteries in series increases the total voltage. If the long wire connects the batteries in series, the voltage will be the sum of the individual batteries, resulting in brighter light.
C. 2 batteries connected with a short wire:
Connecting batteries in parallel maintains the voltage but increases the current. This may lead to a brighter bulb due to increased current flow.
Therefore, the arrangement that will likely make the bulb shine the brightest is option B, with 2 batteries connected in series with a long wire.