Answer:
Fact: Any statement that is true and/or can be proven
<span>Both the interrogative and relative pronoun 'whom' is objective case; used as <span>the object of a sentence or clause.Interrogative: Whom will you tell? (you tell whom). Relative: The person, for whom I made this, is not here right now.</span></span>
C. The platypus, which is a mammal, has a bill like a duck and feet like an otter.
"which is a mammal" is an adjective clause. An adjective clause is used to describe a noun and usually begins with one of these words: that, when, where, who, whom, whose, which, and why. In this sentence, the adjective clause begins with "which" and describes the platypus, which is a noun.
“I believe a longer spring break will help students perform better in school. After a week away from their studies, students will be refreshed and able to concentrate until the end of the school year”
This states your stance and reasoning.
Theme
In a work of non-fiction, its called main idea.