Welche Bedeutung steckt hinter der hier vorgestellten Vokabel aus dem Bereich In the news?

In the news: British Defence Secretary, Liam Fox, resigned recently after harsh criticism that he had allowed a friend, who had not been vetted, to enter his place of work and attend meetings that he had no authority to be present at.

to vet someone

Do you know what it means?

• to qualify
• to feed
• to investigate