The scale that matches the key of the music piece is:
A Sharp.
What is a scale in music?
Any graded series of notes, tones, or intervals that divide what is referred to as an octave is referred to as a scale in music.
What is a key in music?
In music, a key is a collection of functionally linked chords that are derived from the major and minor scales and have a tonic note as their core note (or keynote).
The tonic triad, which is based on the tonic note, forms the chord's primary chord. The tonic of a key can be any of the 12 tones of the chromatic scale.
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