The correct answer is: D. your data will be used correctly.
Data hiding is a programming technique that restricts access to certain data elements. This can be done by declaring the data element as private or protected. This prevents other parts of the program from accessing the data element directly, and forces them to go through a specific function in order to access the data. This can help to prevent errors and make the program more robust.
Option A is incorrect because data hiding does not necessarily mean that your programs can include more data. It simply means that you can control how that data is accessed.
Option B is incorrect because data hiding does not mean that you no longer need functions. Functions are still necessary to perform tasks in a program, even if data hiding is used.
Option C is incorrect because data hiding does not mean that no one can ever use your data. It simply means that you can control how that data is accessed. Other parts of the program can still use the data, but they must go through a specific function in order to do so.