Which note is located on the D (4th) string at the 2nd fret?

The note located on the D (4th) string at the 2nd fret is E. When you play the guitar, each fret represents a half step, or semitone, up from the open string note. The open D string corresponds to the note D.

When you press down on the 1st fret of the D string, it raises the pitch from D to D#, which is also known as Eb. Then, when you press down on the 2nd fret, you raise the pitch again, resulting in the note E. This understanding of the relationship between frets and note names is fundamental for navigating the fretboard and enhancing your improvisation and playing abilities.

F and F# are the notes that would be played on the D string at the 3rd and 4th frets respectively, while A# is not found on the D string at those positions, making E the only correct answer for the 2nd fret on the D string.