Question

you wrote a list of steps the user will take to perform a task. which statement is true about this step?
your app is functioning and ready to test.
you have drawn pictures of what your screens will look like and identified the input-process-output that occurs on each screen.
in this step, you defined your target audience and main goal.
you have defined a use case.

Explanation:

A use case defines the steps a user takes to perform a task. Drawing screens (UI design) is separate. Defining audience/goal is initial scoping. App testing comes after development.

Answer:

You have defined a use case.