A guide finger is a finger that A. is not needed to play a chord
B. maintains contact with a string when the left hand is moving up or down the fretboard
C. maintains contact with the metronome when you change between two chords
D. remains in the same place when you change between two chords

I looked this question up on and there are two different answers- one person was saying B and another said D.

A guide finger is the finger that keeps in contact with the string whilst shifting, therefore the answer should be B.

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