Which of the following describes the A Minor scale's Melodic form descending?

The A Minor scale's melodic form descending is characterized by lowering the 6th and 7th notes a semi-tone. In the melodic minor scale, the ascending form raises the 6th and 7th degrees, creating a distinctive sound that contrasts with the natural minor scale. However, when descending, the melodic minor returns to the natural minor by lowering these same degrees back to their original pitches.

This characteristic reversion is crucial for composers and musicians since it helps establish a familiar structure that aligns with the natural minor scale. The natural minor scale features a submediant (6th degree) and leading tone (7th degree) that are both a whole step below their counterparts in the major scale, leading to a resolution that feels natural and stable when descending.

When compared to the other options, this accurately reflects the behavior of the scale in a descending melodic context, as the other options describe actions that are either not applicable to the descending form or do not align with established musical theory regarding the melodic minor scale.