Fill in the blanks with the most suitable option:It was ____________________ own mistake that cost him a fortune.AheBhisCitDhim

To determine the correct option to fill in the blank, let’s analyze the sentence:

1. Understanding the Context: The sentence discusses a mistake that "cost him a fortune," which implies that the subject is looking for a possessive pronoun or object pronoun that indicates whose mistake it was.

2. Evaluating Options:

   • A. he: This is a subject pronoun and does not fit in the context where we need a possessive or object pronoun.
   • B. his: This is a possessive pronoun, indicating ownership, which is appropriate for conveying that it was the person's own mistake.
   • C. it: This is a pronoun that refers to something previously mentioned but does not fit contextually here.
   • D. him: This is an object pronoun; it could work in certain contexts but does not convey ownership.

3. Choosing the Best Option: Given the sentence requires a possessive pronoun to show that the mistake belongs to him, the best option is B. his.

Final Answer

It was his own mistake that cost him a fortune.