Yes, young adults are permitted to date adult Sims as well as elder Sims.
No, they cannot.
No, young adult is not a genre of book in The Sims 3.
A young adult is in there early 20's where as an adult is in there 30'. A young adult can marry an adult.
No.
young adult
yes they can
They sure can.
No. Your sims need to be one of the following: Young Adult - Any Tattoo Adult - Any Tattoo Elder - (Unknown)
you have to be a young adult
young adult, i think.
Your sims baby will be ALLOWED to move out when it is a young adult, but can have their own home as a teen if an adult goes with them and the adult dies or is killed.
you need to have 2 young adult sims or adult sims who are "romantic interest" stage in their friendship to "woohoo". then you will have to wait until the baby is born.