A blank is a mechanical or electronic device used to keep a steady tempo

a- metronome
b- crescendo
c- ritardando
d- bar line

1.A

2.D
3.C
4.B
5.A
6.C
7.B
8.C
9.A
10.B
11.C
12.C
13.A
14.B
15.D
Your welcome ^w^

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I think the answer is A) Metronome.

just type the whole test answer

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What about for the unit test? what are the answers to thoses??????? I NEED HELP WITH THE MATHHHHHHHHH

Yes, A.

Definitely A. The Metronome.