A book or picture produced merely to bring in money

Answer: Option C

One word substitute is Pot-boiler.

Money-spinner: a thing that brings in a profit.
Pot-hook: a hook used for hanging a pot over a hearth or for lifting a hot pot.
Pot-boiler: a book, film, or other creative work produced solely to make the originator a living by catering to popular taste.
Blue-bird: an American songbird of the thrush family, the male of which has a blue head, back, and wings.