Final answer:
The leading tone in a G-flat major scale is the note F.
Step-by-step explanation:
The leading tone in a G-flat major scale is the note F.
A leading tone is the seventh note of a diatonic scale that is one semitone below the tonic note. In a G-flat major scale, the tonic note is G-flat, and the leading tone would be one semitone below that, which is F.