Answer:
Adverb Clause
While the sailboat bobbed at anchor we watched the stars come out.
Step-by-step explanation:
Adverb Clause-a clause that functions as an adverb in a sentence. It always starts with a subordinating conjunction.
Example: Even if I take the test, my grades won't change.
Noun Clause-a clause that acts as a noun.
For example, I am not interested in whatever Anthony says.
Adjective Clause-a clause that is used to describe a noun in a sentence.
For example, the guy who claimed to be a genius didn't even make it to the top list.