Answer:
I don't think they should because they are always trapped inside of cages with nothing to do really
Explanation:
2000 might be when the disease peaked. It mentions in the passage that the government started to ban farmers from feeding their livestock high risk meat, and that the disease peaked shortly after that. Since 2000 is 'shortly after' 1997, the source from 2000 might be from the peak.
Refineries are places where a substance is refined. It could be any substance, really. But, taking into consideration the options we have available, we could conclude that the specific refinery being referenced here is <em>natural gas. </em>This is a common material in plastic, DVDs and crayons, while bauxite, petroleum, and iron are never used in the manufacturing process of these everyday items.
The form of the verb plan in the sentence is active. Thus, the answer to this item is letter A. An active verb is when the subject is the clearly the "doer" of the action. From the sentence, the subject is I and is clearly the doer of the action which is planning.