Correct option: 4) Choir - this is the most appropriate option. Choir means an organized company of singers (as in a church service). Jury - a body of persons sworn to give a verdict on some matter submitted to them. Council - an assembly or meeting for consultation, advice, or discussion. Orchestra - the circular space used by the chorus in front of the proscenium in an ancient Greek theater. Hence, the most appropriate option is 'choir'.