Which type of music program popularize music on television?
opera
concerts
music videos
music contest

Option: Music videos

Explanation:

Music videos helped in popularize music on television. The origins of the music video date back to the 1920s, when short videos were created. The music videos first developed in Australia in 1974, which popularized as music video gene. The music video became prominence in the 1980s when the channel MTV launched in America and later in international.

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.