1 answer
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The notes are changing as follows:
1. From E to D-sharp: This is a **half step** down.
2. From F to F-sharp: This is a **half step** up.
3. From G to A-flat: This is also a **half step**, but in this case, it is a half step up (moving from G to A-flat is the same as moving up a half step since A-flat is a semitone above G).
Overall, the changes consist of **a mixture of half steps**.
Therefore, the best response from the options provided is: **by a mixture of whole and half steps**.