During the classical period, public concerts were frequently held in <span>B. theaters or halls normally used for other purposes.
These theaters and halls were used for the purpose of plays mostly, but they were repurposed at the time to include musical exhibitions as well. The other options are incorrect because they do not represent the locations where public concerts were held. </span><span /><span>
</span>
I’m guessing it wants you to fill in two major key signatures like D major and C major also with two minor key signatures like A minor and B minor. I picked those key signatures because A minor is the same as C major but it starts on A and D major and B minor is the same but it starts on B
It is because flash mobs is a group of people dancing to music and music is art.