What is the meaning of "heir"?

The term "heir" refers specifically to an individual who is entitled to receive the assets, rights, and obligations of another individual upon that person's death. This definition encompasses not just material possessions but also legal responsibilities that may be inherited. An heir is typically someone who is named in a will or is a blood relative of the deceased, in accordance with inheritance laws. This option directly conveys the essence of what it means to be an heir, focusing on the aspect of inheriting another's belongings.

In contrast, the other choices do not accurately capture the definition of "heir." The idea of a person who gives up their rights, receiving a title given to aristocrats, or serving as an official executor of a will are distinct legal roles or concepts that do not align with the fundamental meaning of inheriting from someone after their passing.