Economics is the study of scarcity. Scarcity exists because the society has unlimited needs and wants but the resources to satisfy these are unfortunately, not unlimited. That is why there is a certain cost to scarce things. The scarcer the thing is, the more its costs. Aside from scarcity, factors like production cost and capital affect the cost of a thing, commonly referred to as a good.
You need to include the person's title so C
the answer is C, "The Wizard of Oz" (quotation) because it is referring to it.
Do you mean synonyms to the word dark that are also nouns?
Charcoal and Raven