craig is modeling the discovery of electromagnetism. which procedure should he use?\no moving a magnet into…

Explanation:

Step1: Recall electromagnetic induction

Electromagnetic induction occurs when there is a change in magnetic flux through a circuit. For a current to be induced, the circuit must be closed. Moving a magnet into a coil of wire in an open circuit ((2^{nd}) option) won't induce a current as there is no complete path for the electrons to flow.

Step2: Consider the compass - wire interaction

Bringing a compass near a wire with no current ((3^{rd}) option) won't show any magnetic effect due to the wire. When a compass is brought near a wire with current ((4^{th}) option), it shows the magnetic field around the current - carrying wire, which is related to electromagnetism (Oersted's experiment). Moving a magnet into a coil in a closed circuit ((1^{st}) option) is electromagnetic induction (Faraday's law), but the discovery of electromagnetism (the connection between electricity and magnetism) was first shown by Oersted with a current - carrying wire and a compass.

Answer:

bringing a compass near a wire that has an electric current