Answer and explanation

Correct answer: B. Its magnetic field opposes the change in flux that produced it

  1. Step 1: Lenz's law is a statement of energy conservation in induction. Step 2. The induced current's field acts against the flux change that causes it. Answer: its magnetic field opposes the change in flux that produced it. Why not the others: Reinforcing the change would create energy from nothing; a steady field induces no current at all.

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