LOL not my childhood

Select all the correct answers. which sentences contain an adverb clause? darla set up a studio because she enjoyed painting. as aaron was having a midnight snack, he heard a loud noise coming from the basement. the entire town was searching for the girl with the red hair. they listened to what he had to say but disagreed with him in the end.

Is the slightly humorous tone of kristof's essay inappropriate for a discussion of deliberately killing wild animals? why or why not?

American history (is, are) studying the american colonies.