Read the following sentences. __________ are common, everyday people, places, things, and ideas. __________ refer to a specific person, place, thing, or idea and are capitalized. which answer best completes the above sentences?

Acommon nouns . . . proper nouns

Bconcrete nouns . . . abstract nouns

Ccountable nouns . . . uncountable nouns

Dcollective nouns . . . compound nouns