을 확인해

check it

→ 을
phrase Uncommon #10,223
check it 을 marks the object, and 확인해 is the informal command form of 확인하다, meaning “to check” or “to verify.” The object can be replaced with a noun, as in 신원을 확인해, “check someone’s identity.”
KO: 문을 확인해.
EN: Check the door.

어리석은 말고 어머니 께 혈압을 확인해 달라고 하세요

Don't do anything foolish; ask your mother to check your blood pressure.

— 내 어머니의 모든 것 (1999)