This is the 3379th most frequent Polish word.
wybierać
"To choose" or "to select."
The phrase 'wybiera się' indicates preparation or intention, describing someone's act of getting ready to go somewhere.
Ona wybiera się na wycieczkę.
She is going on a trip.
The word 'wybieram' is used here to convey the act of selecting or picking something from options, specifically clothing for work.
Codziennie wybieram ubrania do pracy.
Every day, I choose clothes for work.
Here, 'wybrać' is used in an imperative form to emphasize making an important decision, selecting a path or direction in life.