Which of the following is NOT one of the four types of string data types?

The choice of C, Text_String, as not being one of the four types of string data types is accurate because in Alteryx, the valid string data types include W_String (wide string), V_WString (variable wide string), and V_String (variable string). These types are designed for use in different contexts depending on the nature of the data being handled, such as character encoding and variable length.

W_String is used for fixed-length wide character strings, allowing storage of characters typically required for internationalization. V_WString caters to variable-length wide strings, providing flexibility for non-fixed character counts. V_String, on the other hand, is a variable-length standard string type suitable for general string data.

Text_String is not recognized in the standard set of string types defined in Alteryx, which is why it fits as the option that does not belong. Understanding the functions and characteristics of these string types is essential for effective data handling and manipulation within Alteryx workflows, as it influences how data is stored, processed, and preserved during analysis.