Um I think you swapped B and C around but it would be COMPONENTS OF A HOUSE. A house has many things in it and need to have certain things in it to stand up. Like in some cases there needs to be support. In others it can support itself.
A research paper is most likely to require a works cited page
A passive voice is whenever you make the object of an action the subject of the sentence you are writing. (Ex: Why was the road crossed by the chicken?)
An active voice is whenever you make the subject of the sentence doing the verb's action. (Ex: The chicken crossed the road.)
