I think it means that you are you. Your actions represent yourself and you are the only one who can make decisions for yourself. If you go and get arrested for stealing, that's who everyone knows you as. So, therefore, you are what you do, as in you are who you act like.
D. Neither of the restaurants delivers to this neighborhood.
Talent I believe may be the word? Are there choices?
Take time to think before speaking , be respectful to others.