A part of the following sentence is underlined. Choose the option that can replace the underlined part to improve the sentence. If you feel Options A, B, or C do not improve the sentence, then choose Option D: 'No improvement required.'
It was a once-in-the-lifetime opportunity that many would consider invaluable, but very few got the chance to experience.
Show answer & explanation
Correct answer: C
Explanation
The correct phrase is 'a once-in-a-lifetime'. The indefinite article 'a' is used before words that start with a consonant sound. Although 'once' starts with the vowel 'o', it is pronounced with a consonant sound 'w' sound (wʌns).