no, they can live alone. my sims parents died so the teens were left to take care of their siblings...
Chat with our AI personalities
No, they cannot be kidnapped, but they can be taken by the social worker if you don't take care of them.
Only adults can have babies on sims castaway stories (and sims 2)
You just can't. The reason is because the computer only can for some reason. Do not even try this because it is not a job or a profession for you. The game treats them as a "Service Sim" so only NPC sims can be social workers.
The toddler will be taken away by the Social worker and you will have to start another game
On the Sims 2 the children turn to teenagers and then adults, but on the original Sims game the children will stay children forever.