When parameters are passed between the calling code and the called function, parameters and arguments are matched by their relative positions in the parameter and argument lists. their data types. their names. They are not matched up at all.

When passing parameters between the calling code and the called function, **parameters and arguments are matched by their relative positions in the parameter and argument lists**. This means that the first argument in the call corresponds to the first parameter in the function definition, the second argument to the second parameter, and so on. ### Explanation of the Options: 1. **Their relative positions in the parameter and argument lists.** **_Correct._** This is the standard method of matching arguments to parameters in most programming languages. The first argument maps to the first parameter, the second argument to the second parameter, etc. 2. **Their data types.** This is not typically how arguments are matched to parameters. However, some languages use data types for function overloading (deciding which function to call when multiple functions have the same name but different parameter types), but this is separate from how arguments are matched to parameters within a single function call. 3. **Their names.** Only some languages support named arguments, where you can specify which parameter an argument corresponds to by explicitly naming it in the function call. Examples include Python and some modern versions of languages like C# and JavaScript. However, by default and in many languages, positional matching is used. 4. **They are not matched up at all.** This is incorrect. Parameters and arguments must be matched in some way to ensure that the function receives the correct data it needs to operate. ### Example in Python: ```python def greet(name, message): print(f"{message}, {name}!") # Positional arguments greet("Alice", "Hello") # Outputs: Hello, Alice! # Named arguments greet(message="Hi", name="Bob") # Outputs: Hi, Bob! ``` In the above Python example, both positional and named arguments are used to match arguments to parameters. However, when using positional arguments, the matching is based on the order provided. --- **Conclusion:** The correct way parameters and arguments are matched is by **their relative positions in the parameter and argument lists**.