When you study for information you gather information about your topic.
i would think A? before taking my answer maybe wait for a second opinion :)
If you had a given sentence:
"James could not eat because he was feeling ill."
"Because" is acting as a subordinating conjunction. A subordinating conjunctions will combine two independent clauses into one sentence, making it a complex sentence.
We can observe that all the answers contain ellipsis which is an intentional omission of a word, sentence or something longer. The correctly applied version of ellipsis is the first option - Our democratic-republican government is based on the idea of the natural right of every individual member thereof to . . . a vote in making and executing the laws. Omitted word is "voice". Other options are not correct because all of them contain mistakes regarding the usage of the ellipsis.
Was is a linking verb that is the past tense form of the linking verb is which refers to an event that already happened. If and as if can be related to something that has happen. Suppose has a similar definition with the two verbs. Hence the answer is D. all of the above