Npolyphonic music, an independent voice is one that

Sings or plays the melody by them self or alone. (a melody that is sung by one person)

Ithink that the answer is c

Personally, i think the games do because it's actually them controlling it. this might cause them to think it's okay to do it for real. as for animated movies i think they are mostly fine because they're animated. also, animation has come a long way causing animated movies to become more real but 30 years ago this wouldn't be as big of a problem as today.