a
B. S doctor. A. a B. an
the
none of these
Answer is Right!
Answer is Wrong!
The correct answer is A. a.
The word “a” is used before singular nouns that are not specific. In this case, the noun “doctor” is singular and not specific, because it does not refer to a particular doctor. Therefore, the correct article to use is “a”.
The word “an” is used before singular nouns that begin with a vowel sound. In this case, the noun “doctor” does not begin with a vowel sound, so “an” is not the correct article to use.
The word “the” is used before singular nouns that are specific. In this case, the noun “doctor” is not specific, so “the” is not the correct article to use.
The word “none of these” is not the correct answer, because it does not refer to any of the options given.