을 골랐다

chose

→ 을
phrase Uncommon #11,257
chose 을 marks the direct object of the verb and is attached to the thing that was chosen.
KO: 책을 골랐다.
EN: I chose a book.

아제베두가 먼저 후임을 골랐다

Azevedo picked a successor first.

— 엘리트 스쿼드 (2007)