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(C) According to Lenz's law,the induced current in a loop always opposes the change in magnetic flux that produces it.When the conducting wire $XY$ mo

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Perpendicular,pointing out of the paper

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(C) According to Lenz's law,the induced current in a loop always opposes the change in magnetic flux that produces it.When the conducting wire $XY$ moves to the right,the area of the loop increases,which increases the magnetic flux through the loop.To oppose this increase in flux,the induced current must create a magnetic field that opposes the existing magnetic field.Given that the induced current flows in the anti-clockwise direction,we can use the Right-Hand Thumb Rule. By curling the fingers of the right hand in the direction of the current (anti-clockwise),the thumb points outwards,perpendicular to the plane of the paper.Therefore,the direction of the magnetic field at point $O$ is perpendicular to the paper and pointing outwards.

When a conducting wire $XY$ is moved towards the right,a current flows in the anti-clockwise direction in the loop. The direction of the magnetic field at point $O$ is

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