This is the 10797th most frequent Russian word.
выберут
"Выберут" means "they will choose/select."
The word 'выберут' is used in its future tense form, third person plural, indicating that the participants will make a choice or selection in the future.
В следующем туре участники выберут победителя.
In the next round, participants will choose the winner.
Here 'выберут' appears in a dependent clause, indicating an action that will be taken after a condition is fulfilled. It is again in future tense, third person plural.
Когда решат, они выберут лучший вариант.
When they decide, they will choose the best option.
In this sentence, 'выберут' is used in the future tense to describe a possibility of being selected or chosen, in a passive context.