What is the different between a common item you can buy in a store like a sponge and an artistic representation of a sponge

the correct answer is d.

hope this

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.