According to Kirchoff's Laws, what is true about the voltages in a circuit?

The principle behind Kirchhoff's Laws, particularly Kirchhoff's Voltage Law (KVL), states that the sum of the electrical potential differences (voltages) around any closed circuit loop must equal zero. This means that the algebraic sum of the voltages in any closed loop must account for all the voltage rises (sources) and voltage drops (resistances).

In the context of the provided answer, stating that the sum of the power voltages equals the sum of the voltage drops across circuit resistances reflects this law accurately. It reinforces the idea that any energy supplied by voltage sources must be consumed by the resistors in the circuit. Therefore, this answer aligns directly with the foundational principles of network analysis and the conservation of energy within electrical circuits.

Other options touch on different electrical concepts but do not directly relate to Kirchhoff's Laws as they focus on different relationships within circuits. The focus of Kirchhoff's Laws is specifically on how voltages and currents interact at junctions and loops within a circuit.