What is the Illinois statute governing the inheritance of intestate property?

The correct answer, which identifies the Illinois statute governing the inheritance of intestate property, is the Illinois Probate Act. This act provides the legal framework for handling estates and includes provisions outlining how property is distributed when a person dies without a will, known as intestacy.

The Probate Act details the hierarchy of heirs and the specific proportions of estate distribution among relatives, ensuring that the rightful heirs receive their due share according to Illinois law. It encompasses not only intestate succession but also other functions related to the administration of decedents' estates, such as wills, guardianships, and modifications of estate plans.

While some of the other options may reference relevant elements of estate law, they do not directly govern the rules for intestate succession specifically. This makes the Illinois Probate Act the most accurate choice in this context.