I believe it should be C - documentary.
Answer:
Based on their experience, the framers shied away from giving any branch of the new government too much power. The separation of powers provides a system of shared power known as Checks and Balances. ... Each of these branches has certain powers, and each of these powers is limited, or checked, by another branch.
No, because as you said it "does NOT contain fact-based details" therefore it is not reliable. If something doesn't contain fact-based details, it isn't reliable.
The proposition here is - in. <span>A </span>preposition<span> is a word such as after, in, to, on, and with. </span>Prepositions<span> are usually used in front of nouns or pronouns and they show the relationship between the noun or pronoun and other words in a sentence.</span>
<span>B. The writer can use the ideas of others without having to cite the source.</span>
