When a current flows through a straight wire, it generates a magnetic field around the wire, following the right-hand rule. The direction of the magnetic field lines forms concentric circles around the wire. Now, let's consider the interaction between this magnetic field and the magnetic field of the horseshoe magnet.
The magnetic field of the horseshoe magnet is parallel to the plane of the paper, with the north pole on the left. This means the magnetic field lines from the horseshoe magnet are pointing from left to right (from the north pole to the south pole) in the plane of the paper.
When you have two magnetic fields interacting, like in this scenario, you can determine the resultant magnetic field direction by adding the two magnetic field vectors. If the current in the straight wire is perpendicular to the plane of the paper and directed toward the observer, its magnetic field will form concentric circles around the wire. These magnetic field lines will combine with the left-to-right magnetic field lines of the horseshoe magnet.
Using the right-hand rule, you can determine that the resultant magnetic field near the wire will have a direction that is both downward and to the right (downward on the right side of the wire and upward on the left side). So, the wire will be deflected downward (option A) due to the combined magnetic fields of the wire and the horseshoe magnet.
