Answer and explanation

Correct answer: B. an

  1. Step 1: Use "an" before a vowel sound, "a" before a consonant sound, "the" for something specific or unique, and no article for general uncountable or plural ideas.
  2. Step 2: Here the correct choice is "an".
Answer
an.
Why not the others: a, the and (no article) do not fit here.

Practise more Error Identification and Written Expression.

Free questions with an explanation for every one, and full timed University of Jordan English Proficiency Test (JU-EPT) mock tests.