Firstly, Conditional past real mood is a statement where one explains what they would have done if some event had occurred, or what could happen, in other words, a theoretical action. The tense will be dependent on the action. Therefore, the only one that fits is C "If I had homework, I would have studied at the library." I properly states their theoretical scenario in which they had homework.
Answer: The answer is B
Explanation: All the other sentences have detailed descriptions that enhance the reader's mental picture of a very beautiful place, but this sentence is bland and unaccented.
The independent clause is "WE ARE NOT EATING ON THE PATIO" the reason why, is because the second part of the sentence cannot stand on its own, due to the fact it has a because in it. because is a transition word.