Which circuit is built so that if one lightbulb goes out, the other three lightbulbs will continue to glow?

The diagram of the circuit is missing but I will give you a general answer based on the scope of your question

Answer : Parallel circuit

Explanation:

When a light bulb goes off and the other lightbulbs continues to glow, then the circuit connecting the lightbulbs is a Parallel circuit.

Hence the circuit that is built so that one lightbulb can go out and the other three lightbulbs will continue to glow as seen in the question fits the description above.

A parallel circuit allows the continuous flow of current even when some path of the circuit is cut off .

Parallel circuit

Explanation:

Parallel series or circuits have the inherent advantage that perhaps the exhaustion or elimination of one bulb does not affect the other lights in the circuit. Since there is still a different, isolated closed path first from output to one of the other modules, they continue to function. So, we use Parallel series or circuits.

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