Question

Which word correctly completes the sentence? All four of this __________ tires need to be inflated. A. car's B. cars' C. cars

Answer 1

The answer is A. car's to what to the wheels belong to the car and how many cars are there there is only one so you show it like this 's<span />

Answer 2

The correct answer A  is a sense the apostrophe is before the s which means singular as  in 1 car. You know its one car because it says ALL four tires need to be inflated and 1 Car has four tires as I am sure you know lol