Help me! Please explain this question following the guideline that my professor wrote.

Help me! Please explain this question following the guideline that my professor wrote. I already have the answers but I don't know why and my professor wants to specifically use his guideline to explain.

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Answer 22)Option b. The iron will behave like a magnet if current flows through the wire.Due to magnetic effect of electric current, when current is passed through the wire, magnetismis induced...