What note is found at the 4th string 7th fret?

The note found at the 4th string (which is the D string) at the 7th fret is indeed A. To understand this, you can visualize the fretboard and remember the standard tuning of the guitar: the 4th string is tuned to D.

When you play a note at a specific fret, you are essentially raising the pitch of the open string note by a half step for each fret you move up. Starting from the open D string, the notes along the neck from the open string to the 7th fret are as follows:

1. Open string: D

2. 1st fret: D# (or Eb)

3. 2nd fret: E

4. 3rd fret: F

5. 4th fret: F# (or Gb)

6. 5th fret: G

7. 6th fret: G# (or Ab)

8. 7th fret: A

Thus, by counting up from the open D string, you arrive at A when you reach the 7th fret. This systematic approach of moving along the fretboard based on half steps helps clarify why A is the correct answer for the 4th string at the