Respuesta :
Answer: D) "Although we might consider animals as pets", many animals work.
Explanation: an adverbial clause is a group of words that function as an adverb (they modify an verb, an adjective or another adverb). They are usually dependent clause (doesn't have complete meaning on they own). In the given sentence, we have an independent clause "many animals work" and a dependent clause (that is also an adverb clause): "although we might consider animals as pets."