Stuck on where to go with this one.

Which of the following commands is more recommended while creating a bot?

Each time you save a document, you will need to type in the file type in which it should be saved you can select the save button to save it with the same file name if it has been previously saved you will need to select the location to save the file you will need to use the save as dialog box

What is data validation? (in a simple definition)