Final answer:
The angle of reflection from a plane mirror is equal to the angle of incidence, so the reflected ray will make an angle of 45° with the table.
Step-by-step explanation:
The angle of reflection from a plane mirror is equal to the angle of incidence. In this case, the mirror is fixed at an angle of 45° to the table. Since the initial ray of light is parallel to the table, its angle of incidence with the mirror is also 45°. Therefore, the reflected ray will also make an angle of 45° with the table.