Question 1.
Invigilator: There is one question before you, and one answer is required. If you try to communicate with myself or the guard, you will be disqualified. If you spoil your paper, intentionally or accidentally, you will be disqualified. If you choose to leave this room for any reason, you will be disqualified.
Invigilator: Any questions?
He clearly said There is one question before you, and one answer is required. Then he scared them by telling about disqualification under specific circumstances. However we all know test doesn't begin until someone says so. In this case timer. Any questions? Was THE question. The answer was No. Or No questions. If any of them had balls to say it at the start, they would've been hired off the bat. Maybe not before the test, but afterwards. Regardless of how it went. U can see the disappointment in invigilator when no one dared to say no.
The test was waiting out the timer, doing absolutely nothing. Patience to detail. if they missed the first answer. They could maybe find it on paper. Apparently the job requires you to say no a lot. Which was made evident in the end. There's not enough pills for everyone. At first maybe.
The increase in human knowledge is the cause of the decline of religions.