Which set of numbers is described as counting numbers, their opposites, and zero?

1. The rule for integers defines them as counting numbers, their opposites, and zero. 2. Fractions can include values that are not counting numbers or their opposites, such as one half. 3. Exponents and coefficients are roles that numbers play in an expression, not a name for this set of numbers. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 3 "Integers", section 3.1 Introduction to Integers_