What type of circuit allows multiple paths for current to flow?

A parallel circuit is defined by its structure, which provides multiple pathways for electrical current to flow. In a parallel circuit, components are connected across common voltage points, so if one component fails or is removed, the current can still flow through the other paths available. This arrangement ensures that each component operates independently, and the overall circuit can continue functioning even if part of it is interrupted.

In contrast, a series circuit has a single path for current, meaning that if one component in the circuit fails, the entire circuit is interrupted, and no current can flow. A combined circuit generally refers to a mix of series and parallel configurations, which complicates the pathways rather than allowing for multiple, independent routes. An isolated circuit is one that is completely disconnected, so it does not allow current to flow at all.

Thus, the ability of a parallel circuit to offer multiple paths for current flow is what defines it and sets it apart from the other options presented.