What word can be used in place of the underlined word in this sentence?

The cat's toy is smaller than (its) bed.
A. his
B. her
C. its
D. their

To find the word that can be used in place of the underlined word, you need to understand the possessive pronoun used to refer to something that belongs to the cat.

In this case, the possessive pronoun used is "its," which indicates that the thing belonging to the cat is not specifically male or female.

Given the options, the word that can be used in place of "its" is option C, "its." This is because we are referring to the cat's toy and the cat's bed, and we don't know the gender of the cat. Therefore, we use the gender-neutral pronoun "its."

So, the correct answer is C. its.