Answer: When you figure out the main idea, you can then see how the author addresses it. If they have a bias opinion against, or for it, you can note their ton when the speak about it. Knowing the main idea, can help show why the author is writing about it, and how they feel about it as well.
Explanation: Hope it helps :)
Celestial - Relating to the sky
Sagacity- The capacity to reason, judge, and act intelligently
Conjecture - To form an opinion without strong evidence
Interpose - To come between two things, to interrupt
Yes they do but it’s expensive