if a transformer raises the voltage, it will\na. raise the resistance\nb. reduce the resistance.\nc. raise…

Brief Explanations:

In a transformer, power $P = VI$ is conserved (neglecting losses). If the voltage $V$ is raised, to keep the power constant, the current (amperage $I$) must be reduced since $P$ is fixed. Resistance is a property of the material and dimensions of the conductor and is not affected by the operation of a transformer in terms of voltage - current changes.

Answer:

D. Reduce the amperage.