E)! Categorical variables are unique in that they represent a quality, such as colours, instead of a quantity, ie. the quantity of songs on your MP3 player.
Francisco Pradilla y Ortiz
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I believe the answer is D.
A documentary film is a nonfictional motion picture intended to document some aspect of reality, primarily for the purposes of instruction, education, or maintaining a historical record.example: 20,000 days on earth
i think thats the answer sorry if i am wrong :C