Choose the correct article for the sentence: 

He looks as stupid as ___ owl.

The correct answer is C) ‘An’. In English grammar, the adjectives ‘a’, or ‘an’ and ‘the’ are usually called Articles. The articles, ‘a’ or ‘an’ are used for an indefinite person or thing spoken of; as a doctor; that is, any doctor. Hence they are known as indefinite articles. The article ‘the’ is used to point at a particular person or thing, hence being known as a definite article. The word before which article is to be added is ‘owl’, as it begins with a vowel and has a vowel sound, the article ‘an’ the correct choice.