Hi. You did not enter the text to which this question refers, which makes it impossible for me to tell you how Blake would respond about what makes him what he is. However, I will try to help you as best I can.
Generally speaking, we can consider that what makes you who you are are your experiences. This is because experiences are able to mold and build very personal characteristics of human beings, building a personality and behavior that is intrinsic to each individual.
To answer how you think Blake would answer this question, you will have to read the text it refers to and try to define Blake's thoughts and personality on that question through the text.
