Can you name the voice types that are common in a choral octavo? What does each mean? How do sharps or flats work on a scale?

There are six different types of voices  but there are four main ones  the four main ones are: Baritone, Tenor, Mezzo-Soprano, and Soprano and the other two are Bass and Alto.

BTW I didn't get it off the internet this time maybe this will help if not report me

Explanation:

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.  

a fashion movement

sorry if this is wrong