Question

determine if the collection is not well defined and therefore is not a set.
the collection of u.s. vice presidents

choose the correct answer below.
the collection is not well defined and therefore it is not a set.
the collection is well defined and therefore it is a set.

Explanation:

A well-defined collection has clear, objective criteria to determine membership. For U.S. vice presidents, there is an official, verifiable list of individuals who have held this office, so membership is unambiguous.

Answer:

The collection is well defined and therefore it is a set.