Which note corresponds to the 3rd fret of the 2nd string?

The note that corresponds to the 3rd fret of the 2nd string, which is the B string on a standard-tuned guitar (E A D G B E), is D. When you press down on the 3rd fret of the 2nd string, you raise the pitch of the open string (B note) by semitones.

In a standard tuning, the notes on the 2nd string (B) progress as follows when you move up the frets:

• Open string = B

• 1st fret = C

• 2nd fret = C#

• 3rd fret = D

Therefore, the correct answer is D, which is D, confirming that pressing the 3rd fret on the 2nd string yields this pitch.