Sims 4 Countdown to Doomsday Challenge

"Sims3fan1986;14793542" wrote:
I am a little confused about the THRESHOLD number.

It's basically the number you have to roll over to not be infected. So say its day 18 and the threshold is 8. Your sim becomes ill. You would roll a 20 sided dice or something of that nature, and if you get over 8, your sim is not infected. If you roll under 8, your sim does have the virus, and you have to roll again with the threshold 12 subtract your sim's athletic skill. Over the number, live, under the number die. I hope this helps :) I was confused about the threshold when I first read the challenge ;)