Question

Fill in the blanks with the most appropriate words.
They ___________ wash ___________ car every day.

• A. Don't / my
• B. Don't / his
• C. Don't / their
• D. Don't / our

Answer 1

The correct option is C Don't / their

The correct answer is Option C.
From THEY in the given sentence, we know that there is more than one person to whom the car belongs. THEIR is a possessive pronoun used for more than 1 person.
Hence THEIR is the correct answer.
The remaining options are incorrect because they mention singular pronouns.