Biased <span>is an antonym for objective. Objective means not biased, not subjective. </span>
The answer to #4 is "By" because a preposition word is a word that procedes to a noun or a pronoun. Some examples are "after", "against", "before", "behind", "below", ect... In this case the preposition is "by" and it procedes to the words "royal proclamanation"
The answer is C.
Hope it helped.
-Charlie
