What is the correct way to declare a variable for a string in ABAP?

In ABAP, declaring a variable for a string correctly involves using the DATA statement followed by the variable name, the TYPE keyword, and then specifying the type. In this case, 'string' is the appropriate type for character data that can vary in length.

The statement "DATA: myString TYPE string;" effectively initializes a variable named myString to hold string data, allowing it to work correctly in the context of the ABAP programming language. This method adheres to the language's syntax and standards for data declaration and type assignment.

Other options do not conform to the correct syntax or concepts in ABAP. For instance, declaring a variable directly with just "STRING myString;" lacks the necessary DATA keyword and type declaration format. The option suggesting "myString = new STRING;" resembles object-oriented programming but is not applicable for standard string declarations in ABAP. Lastly, while "DATA myString = 'Hello';" is valid in the way it initializes a variable with a literal string, it does not explicitly define the type in the declaration, making it less formal compared to the first option.