Answer:
Underlined words can convey a certain tone or even tell the purpose of the passage. Take the following example:
Passage 1:
Whales are endangered animals that need to be taken care of today! They are starting to go extinct, and when that happens, some other animals will under or over-populate. Donate now!
Passage examination:
If we look at line one, the word “today” is underlined. This provides many clues we can use as evidence for an inference. This underlined word tells us that the author is urgent about saving whales, which provides information about the purpose of the passage. Also looking here, we can see that he is very mad, because of the sad sentence based on the given facts, and he underlines the word today and adds an exclamation mark, changing the tone of the passage majorly. Here is another passage with an underlined word.
Passage 2:
I went to a ball game yesterday. It was so boring! There were only peanuts and hot dogs. My favorite team didn't score, and the other got 5 penalties! I will never like baseball AGAIN!
Passage examination:
Look at the word, “only,” which is underlined in the first line of the passage. It's underlined to show the reader how frustrated he is with only two snacks. It is also italicized to show even more negative emotion. The same goes for the last line, but he is not as mad as the first because he didn't use italics. Compare the two passages above and see the purposes of the author, the tone, emotion, and much more. That's how underlined words affect the meaning of a passage.
