This is the 1425th most frequent Arabic word.
قرر
"قرر" means "to decide."
The word 'قرر' is used to indicate that Ali made a decision for a specific purpose, in this case, traveling for study.
قرر علي أن يسافر إلى الخارج للدراسة.
Ali decided to travel abroad for study.
Here, 'قرر' shows a decision made by an authority (the government) for an infrastructural project.
قررت الحكومة بناء مستشفى جديد.
The government decided to build a new hospital.
In this usage, 'قرر' is used in an interrogative form to ask about someone's decision regarding their plans.