Foundation
English
Articles
Articles
Question
Read the sentence to find out whether there is any grammatical error or idiomatic error in it. The error, if any, will be in one part of the sentence. (Ignore errors of punctuation, if any). 

Naturalisation is the process by which (a) / a immigrant becomes a citizen (b) / of his new country. (c) / No error (d)
d
c
a
b
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Solution
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Part (b) has the error. Since immigrant starts with a vowel, the article to be used before it is 'an' and not 'a'. So the correct answer is B.