FTCE General Knowledge Math Practice Test - Prep, Practice Questions & Study Guide

Whole numbers include all non-negative integers, starting from zero and extending upwards to infinity. This means whole numbers include zero and all the positive integers (1, 2, 3, etc.) but do not include any negative numbers or fractions.

Therefore, the correct classification as whole numbers consists of positive whole numbers and zero, which validates the choice. While some options mention negative numbers or only positive numbers, they do not accurately encompass the complete definition of whole numbers, which clearly includes zero as part of the set.