Yes it is called the age of region
Grand staff???????
When music on two staves is joined by a brace, or is intended to be played at once by a single performer (usually a keyboard instrument or the harp), a great stave (British English) or grand staff (American English) is created. Typically, the upper staff uses a treble clef and the lower staff has a bass clef<span>.</span>
1. B 2. I think it’s D but I could be wrong 3. B
4.D 5. B 6. B