I thought this question was a bit perplexing given that the most correct answer available IMO was considered incorrect.
At what current level does ventricular fibrillation occur?
Your Answer: 17mA - 99mA
This is the information listed on this site.
"Ventricular fibrillation occurs with currents as low as 60-100 mA in AC systems. For DC, about 300 to 500 mA."
There was an answer lower and then two higher than the answer I selected. My only assumption is that they might have been considering DC only.