This will prevent some of you more sinister players from killing off underage Sims and still trying to count them towards your total. Keep in mind, however, as you tally up your youngsters that the last baby is the only one that does not have to become a Young Adult before they actually count towards your total. You will successfully complete the challenge once you have given birth to your 100th baby.
Click on your sim after she is pregnant and choose pregnancy. Perks from the Network Club, Rally the Troops, and any Emotional Perk garnered from clubs are banned from the challenge This mod allows you to choose different options after your sims have done the woohoo.