If an action is brought against Dent on behalf of Pell to recover damages for Pell's injuries, will Pell prevail?
No, unless Dent knew or had reason to know that Camden had a propensity to attack younger children. 
No, because parents are not personally liable for their child's intentional torts. 
Yes, if Camden was old enough to be liable for battery. 
Yes, because Camden was in Dent's custody. 