Answer:
Option A
Explanation:
They usually wear T-shirts on the weekends.
They usually wore T-shirts on the weekends.
They usually worn T-shirts on the weekends.
They usually wearing T-shirts on the weekends.
Options C, and D aren't the answer because the sentence itself wouldn't make sense. Which is going to leave options A, and B as the final options so the answer would be option A, because option B the word wore, sounds past tense as in it already happened which just doesn't make sense because the sentence is stating that it happens every weekend.
Hope this helps.
