You need to write 5 sentences about living working engineer which is one of your future engineering field. All other instructions are attached below in a document. 

NOte: only 5 sentences, not 5 paragraph. And there is also a sample on the attached document on page 2. Foe question number 4, you need to connect how this engineer is related to one of the 14 grand challenges.

you can find 14 grand challenges in the link below:

Hit the link and click on challenges , you would be able to get 14 challenges.