Which of these intervals is a half step g to a flat e to f sharp c to b-flat or All the above

Answer 1

To determine whether each interval is a half step, let's look at each pair of notes:

1. G to A-flat: This is a half step (one semitone).
2. E to F-sharp: This is a whole step (two semitones), since E to F is a half step, and F to F-sharp is another half step.
3. C to B-flat: This is a whole step down (two semitones), since C to B is a half step down and B to B-flat is another half step down.

Since only the interval G to A-flat is a half step, the answer is G to A-flat is correct; the others are not. Thus, the correct choice is only the interval G to A-flat is a half step.