Fill in the blank with the appropriate pronoun:
______ chair is placed near the wall.
a. Her
b. Theirs
c. Mine
d. Yours

Hint: A pronoun is a form of a noun that is used as a substitute for another noun. It is dependent on the gender of the noun as well as the number of people or things being referred to. It is used to repeat using the same nouns. Examples of pronouns are I, them, him, her, she, etc.

Complete answer:
In the given sentence, the object is the chair. This chair belongs to someone. The pronoun is to be used for the ‘someone’ to whom the chair belongs.

Option a, ‘Her’, is the correct answer since the girl’s chair is placed near the wall. Instead of “The girl’s”, the pronoun ‘her’ has been used. It indicates that the chair belongs to some girl.
‘Theirs’ in option b is wrong since ‘Theirs chair’ is grammatically wrong in the English language.
Option c is wrong because ‘mine’ is used when we have to say that something belongs to me and it is used at the end of the sentence. For example, ‘This pencil is mine’. ‘Mine’ is not used at the beginning of a sentence. The correct usage would have been ‘My chair…’.
Option d is also wrong because ‘Yours’ is also used at the end of a sentence. For example, ‘This pencil is yours’.

Note: Correct usage of pronouns is also dependent on their placement in a sentence. Pronouns used after the object cannot be used as the subject of a sentence. For example, the pronouns such as mine, hers, yours, etc. cannot be used at the beginning of a sentence.