This is the 458th most frequent Dutch word.
gekozen
"Chosen"
In this context, 'gekozen' is the past participle of the verb 'kiezen,' and it indicates the completion of a personal choice made by the speaker.
Ik heb voor een blauwe trui gekozen.
I chose a blue sweater.
Here, 'gekozen' is used as a past participle functioning as an adjective to describe the strategy selected previously.
De gekozen strategie bleek succesvol te zijn.
The chosen strategy proved to be successful.
In this case, 'gekozen' reflects the outcome of a collective decision or election process made by the subjects (us).