Guitar class the root of a chord can be defined as a. all the notes that make up the chord b. the quality of the chord c. the note that shares the same letter name as the chord d. the number of strings played on a chord

Hello there! 

With guitar chords, and of course music in general, the root of a chord can be defined as the note that shares the same letter name as the chord, seeing that it would be the concrete base of a chord itself. It is linked to harmonic thinking, that is, to the idea that vertical aggregates of notes form a single unit, a chord. Hope this helps, and have a nice day! 

Very true. in today’s age anything is possible.

If your (k12) then it's all of them.i learned it the hard