What is the data type that uses the values True or False in ActionScript 3.0?

The data type that uses the values True or False in ActionScript 3.0 is the Boolean data type. In programming, Boolean values represent the two possible states of truth: true and false. This data type is widely used in conditional statements, allowing developers to make decisions based on certain conditions. For example, in an if statement, a Boolean expression might determine which code block to execute depending on whether the condition evaluates to true or false.

In contrast to the other options, the Number data type represents numeric values, allowing for mathematical operations. The String data type is used for sequences of characters, which can include letters, numbers, and symbols, but does not inherently express truth values. The Null data type represents the absence of a value, indicating that a variable has no data assigned to it. None of these types provide the specific functionality of representing true or false conditions critical for control flow logic in scripts.