Final answer:
A person 17 years or older commits predatory criminal sexual assault of a child if the victim is under 13 years of age. Laws are in place to protect minors, with strict penalties for violators.
Step-by-step explanation:
A person who is 17 years of age or older commits predatory criminal sexual assault of a child if the offender commits an act of sexual penetration and the victim is under 13 years of age. This is a severe crime that is addressed in most jurisdictions with stringent laws to protect minors from sexual predators. The penalties for such an offense are typically severe and may include lengthy imprisonment. It's important for individuals to be aware of the laws in their jurisdiction regarding age of consent and the additional protections in place for children to prevent such predatory behaviors.