를 고르고

choose … and

→ 를
phrase Rare #25,025
choose … and 를 marks the preceding noun as the object of 고르다, meaning “to choose.” 고르고 connects to what follows, often meaning “choose … and” or “choosing …” depending on the sentence.
KO: 메뉴를 고르고 주문했어요.
EN: I chose a dish and ordered.

넌 나폴리 대신 토리노를 고르고 있어

You’re choosing Turin instead of Naples.

— 레오파드 (1963)