Question

1. each key on a standard piano plays a note. a note is a specific frequency of sound. the notes are placed at even intervals from each other. many people tend to think about sound in octaves. a normal octave has 12 tones. in microtonal music, each tone sounds very close to those above and below it. harry partch’s octaves contain 43 tones. to cover the same sonic range, a piano in partch’s tuning system would have more than 250 keys. partch’s octaves cover a _______ range of tones.

a pointless
b modest
c routine
d broader

Explanation:

To solve this, we analyze the context: A normal octave has 12 tones, while Partch’s octaves have 43 tones. For the same sonic range, his piano needs over 250 keys. This implies his octaves include more tones, so the range is "broader". "Pointless" (A) is illogical, "modest" (B) contradicts (more tones), and "routine" (C) doesn't fit.

Answer:

D. broader