Put a comma after yes, and remove the comma after Colorado.
Answer:
C
Explanation:
I agree with you, I think it's also C.
A is incorrect, it doesn't mention anything about hygiene
B is also incorrect it doesn't mention anything else about the bourgeoisie, and his sociological- defined class
C is correct, it says "peasant" and it also says "healthy" Usually people aren't too poor looking when they have a job and are able to maintain themselves
D is incorrect it's not describing him cheerful
The adverb clause in this sentence is since she had a test tomorrow, and it shows the reason why Colleen went to bed early. The subordinating conjunction is since. The words modified by this adverbial clause are went to bed early.