What purpose does the bold-faced figurative language serve?

What conclusion can be drawn about sea walls?

Which of the following best describes the speaker’s feelings about america?

Which statement would you identify as being correct? a. it is important to learn the etymology of every word in a text. b. it is important to understand the etymology of every word in a text. c. it is important to study the etymology of every word in a text. d. it is important to study the etymology of some words in a text.