Question

A metronome is a tool that musicians use to..

-decorate yards in large cities
-hold the guitar while standing
-keep a steady beat during practice
-replace guitar strings

Answer 1

keeping a steady beat/ tempo

Answer 2

Metronomes are used to keep a beat

Step-by-step explanation:

Metronomes are a tool used as a beat-maker, they tic every second/other second or when it is set.