Which of the following is NOT part of the order of operations?

The order of operations is a set of rules that indicates the sequence in which calculations should be performed to correctly evaluate expressions. The established order is commonly summarized by the acronym PEMDAS, which stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

In this context, the correct answer highlights that the option listing "Addition and Division" as a combined entity deviates from the proper representation of the order of operations. While both addition and division are indeed part of the order, they are treated as separate operations that must be performed according to their specific position in the equation. After addressing operations in parentheses and exponents, multiplication and division occur from left to right, followed by addition and subtraction from left to right.

Thus, the choice that implies both operations are to be considered together as a single entity is not a legitimate representation of the order of operations, making it the correct answer for which option is NOT part of the delineation of the order of operations.