How do you ask and answer questions on scratch?

On Scratch, you can ask questions using the "ask [question] and wait" block, which prompts the user for input. To respond to the question, you can use the "answer" block to retrieve the user's input. This allows you to create interactive projects where the user's responses can influence the program's flow or outcomes. For example, you could ask for a user's name and then display a greeting using that name.