This instrument was not popular during the Medival period... O A.) Harp
O B.) Recorder
O C.) Violin
O D.) Portative Organ

imma come back to you?

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.  

answer impressionism;