What additional capability does the scene magnification upgrade provide to the AGM-65B?

The scene magnification upgrade for the AGM-65B missile significantly enhances the system's ability to identify and acquire targets at much greater distances. By providing a larger field of view for the onboard targeting sensors, this upgrade allows for the recognition of targets that are further away than previous capabilities allowed. This improvement in acquisition range is crucial during combat operations, as it increases the effectiveness of the missile by allowing for engagement before the aircraft is in close proximity to potential threats.

In the context of the other options, while improved targeting accuracy, enhanced night vision, and extended operational range are all important factors in missile performance, they do not directly stem from the scene magnification upgrade specifically. The upgrade's primary focus is on expanding the range at which targets can be effectively identified and engaged.