Which of the following is NOT a type of function in Python?

In Python, the term "function" typically encompasses several categories that help organize how we implement and use functions within the language. User-defined functions are those created by the programmer to perform specific tasks. Built-in functions are pre-defined functions provided by Python, such as print(), len(), and many others, which facilitate common operations without requiring manual definition.

Lambda functions are a type of anonymous function defined using the lambda keyword, enabling quick, small functions without formally declaring a function using the def keyword.

On the other hand, "dynamic functions" are not an established category of functions in Python programming. While Python does support some dynamic behavior (such as functions being first-class objects that can be passed around and modified), the term "dynamic functions" is not recognized as a standard type of function within the language. Therefore, this option stands out as not fitting into the defined categories of functions in Python.