Yea it's A. You're good :)
A word that describes or modifies a noun (ex. big, small, red, cold)
The answer to your question would be that the sentence that demonstrates the correct use of a conjunctive adverb is the following one: Lisa cleaned the Kitchen this afternoon; meanwhile, Donovan dusted the living room.
In this case, the conjunctive adverb "meanwhile" has been used as a coodinating conjunction to join two independent clauses. You need the semicolon to connect the two clauses.
