The students set up their experiments. They set up quickly. The science fair began. before, whenever, although joining words. I'm doing subordinating conjunctions with adverbs​

The students set up their experiments quickly before the science fair began.

Explanation:

In a complex sentence, the subordinate clause and the independent clause are linked by a subordinating conjunction or a relative pronoun. An adverb clause is a subordinate clause that acts as an adverb, and it modifies the verb, an adjective clause, or a different adverb clause.

In this example, only the adverb of time "before" correctly links the provided independent clauses.

"Although" is an adverb of concession, so it doesn´t work in this sentence. "Whenever" is an adverb of time, but doesn´t fit in the sentence provided.

d understatement