Final answer:
The Northern Plains vocal range style is typically characterized as a middle to high vocal range, showcasing a breadth of pitches and expressive capabilities.
Step-by-step explanation:
The vocal range style of the Northern Plains is generally considered to be middle to high vocal range. This style is characteristic of the music from this geographical area and is defined by its ability to cover a broad spectrum of pitches, often reaching into higher registers that require significant control and breath support.
This range allows for a variety of vocal expressions, from strong, resonant tones to more intricate and delicate nuances that can be found within the musical traditions of the Northern Plains.