The correct option is C The conductor does not experience any force.
If the direction of magnetic field is parallel to the direction of the current, the conductor does not experience any force. When a current carrying conductor is placed in a magnetic field, whose direction is perpendicular to the direction of current in the conductor, the conductor gets force acting on it and if the conductor is free to move, it begins to move in the direction of force. This force is perpendicular to both, the direction of current as well the direction of magnetic field.