He is worried _____ his future.
He is worried _____ his future.
Explanation
Be worried about something means کسی چیز کے بارے میں فکر مند ہونا
About is a preposition here.
He is worried about his future.
Be worried about something means کسی چیز کے بارے میں فکر مند ہونا
About is a preposition here.