Which of the following are valid mathematical operators in the formula tool's expression editor?

In the formula tool's expression editor, several mathematical operators can be utilized for calculations. The correct choice includes addition (+), subtraction (-), division (/), and modulo (%).

The modulo operator is particularly important as it computes the remainder after division of one number by another. This operator is useful in various scenarios, such as determining whether a number is even or odd or performing calculations that require cyclic behavior.

The inclusion of the other operators like addition, subtraction, and division is fundamental, as they allow for basic arithmetic operations. This makes the chosen option comprehensive in covering a variety of mathematical expressions that can be executed within the formula tool, thereby enabling more complex data manipulation and analysis.

The other choices do not include the modulo operator, making them less comprehensive. Since the question specifically asks for valid mathematical operators, it's essential to include all these operations for maximum functionality within the expression editor.