Which adjustment is used to lower the front of the frame?

To lower the front of the frame, bending the pad arms down from the bridge is the correct adjustment to make. This adjustment modifies the angle at which the eyewear sits on the face, allowing the frame front to drop lower. When the pad arms are bent downwards, it effectively tilts the frame down, which can improve fitting for the wearer, ensuring that the lenses align properly with the eyes for optimal vision.

The other options address different aspects of frame adjustment. Pantoscopic tilt involves angling the frames forward, which would typically raise the front rather than lower it. Bringing the pads closer to the bridge would not lower the front of the frame; instead, it would likely raise it more. Spreading the pads further apart can affect the overall fitting of the frame but does not directly result in lowering the front of the frame either. Thus, adjusting the pad arms down is the most effective way to achieve the desired position.