Choose the option that is most nearly opposite in meaning to the underlined word and that will correctly fill…

Analyze the question: The underlined word is precarious. You need the option that is most nearly opposite in meaning and also fits the gap in the sentence.

Explain the concept: Precarious means unsafe, unstable, or likely to give way or fall. Its antonyms include secure, safe, stable, and firm.

Solution:

• A. narrow: This has nothing to do with safety. It is not an opposite.
• B. smooth: This describes a surface texture. It is not the opposite of unstable or dangerous.
• C. durable: This means long-lasting. It is related to strength, but it is not the direct opposite of "unsafe or unstable".
• D. secure: This means safe, stable, and firmly fixed. It is the direct opposite of precarious.

Check it in the sentence: "The precarious terraces of the stadium have been transformed into a secure walkway." This makes sense because the dangerous terraces were improved and made safe.

Answer: D. secure

Tip: In antonym questions, first define the underlined word in your own words (here: "unsafe"). Then look for the option that is its direct opposite ("safe"), not one that is merely related to it. Then test it in the sentence to confirm it fits.