Answer:
A parallel circuit
Step-by-step explanation:
The light bulbs can be connected in two different configurations:
1. Series --> when connected in series, the light bulbs are on the same branch of the circuit. This means that the same current flows through all the light bulbs, while the potential difference across each light can be different.
2. Parallel --> when connected in parallel, the light bulbs are on separate branches of the circuit. This means that the current flowing through each bulb is different, while they all have same potential difference across them.
In the series configuration, when one light goes out, all the other lights also turn off, because they are all on the same branch: so if one breaks, it opens the circuit, and the current can no longer flow through the other lights.
On the other hand, in a parallel configuration, when one light goes out, the other lights stay on, because they are on separate branches, so they are not affected by the broken branch and current can still flow through them.