The correct pronoun to complete the sentence is 'It'. This maintains clarity by referring back to the pig that died. Proper usage of pronouns is essential for concise and effective communication in English.
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To fill in the blank with the correct pronoun, we need to know what the blank is referring to. Given the sentence "It was his own mistake that the pig died. ___ died of injuries", the subject being referred to is "the pig."
The pronoun that refers to a pig is "it" since "pig" is considered an animal and typically referred to with "it" when the gender is not specified.
Therefore, the sentence should read: "It was his own mistake that the pig died. It died of injuries."
This sentence structure helps clarify that the pig is the one who died due to injuries. Pronouns are useful in sentences because they help avoid repetition and make the text smoother and easier to read. Understanding the context allows us to select the appropriate pronoun based on the noun it is replacing.