dont know how to not come off sounding like a "pageant" answer.
Ha ham very good. I am glad you are trying pageant answer, :-)
Well, it is all about focusing the binoculars on what you do know. Have you heard of "design activism?" Google that term.
Let's let them know that you are entering the profession of an engineer, and let them know what you would do with such a career. Even if you do not continue with that career choice, you can switch to something else later. For now, choose your path, and show confidence. Write about a goal you do have... you can have many goals, many careers.
So, open your mind, and let yourself write about a particular field... cite some journal articles, and really enjoy writing about your possible career path!