same

The first sentence ("If these new policies are approved, students will soon be able to freely access their academic records") serves as context because, without it, we would not know what the teacher is referring to as a blunder. It provides a hypothetical situation—a condition or context that sets the stage. It’s essentially saying, “Here’s what’s going to happen if X is approved.” The phrase "However, as a teacher, I believe this would be a blunder" is the conclusion because it expresses the teacher’s main claim or judgment in light of this context. This claim (the conclusion) is supported by the rest of the paragraph, which offers reasons (premises) to justify it—namely, that "allowing students full access to their academic records might distract teachers from more significant responsibilities, as they have to organize and provide files," and, based on the teacher’s observation, that "most students don't express the desire to access their records in the first place."

Yes, I think so!

I think it's fair to infer that if comparative linguistic analyses span various regions and eras, then it's likely—or at least plausible—that communication has existed broadly across time and civilizations. However, perhaps the mode of analysis also makes a difference? If you think about it, comparative analysis is often used in descriptive or explanatory contexts to highlight similarities, differences, patterns, and trends—not to persuade someone that a claim is true. That’s why its purpose matters: if it is used to justify the truth of a claim, it can be part of an argument; if it is used to explore or illustrate something already assumed, it is not. In this case, then could we not maintain comparative analysis serves an explanatory, not argumentative, function?