The <span>complex sentence that contains a dependent adverbial clause among the choices given is:
</span>C. Mark expects the photo to arrive when the letter arrives.
As the name suggests, adverbial clause is introduced by an adverb. This clause answers the question "when" which indicates the time the action happens.
One time i went on a walk to the park. I was sitting on a bench by myself and I was really lonely. this person came up to me and asked me if i wanted to play with her and her sister. I said sure and played with them. A few hours went by and they had to leave, So i went to go pick my book up. When i got to the bench, my book was gone. It was my favorite book at the time so i was really distraught. The girls came back over and asked me what was wrong. I said i lost my book. They had a party to go to but they stayed behind and helped me look for my book. we never found it but the fact that these random girls were late to a birthday party for their aunt to help me find a book made me really happy. this was a while ago but i still appreciate them
D) why the city needs better public transportation because it writes it in a question meaning it will give you suggestions on how to improve something
