The correct option is D Temperamental but self-aware
"...it requires a strong moral principle to prevent me from deliberately stepping me into the street, and methodically knocking people's hats off-then, I account it high time to get to sea as soon as I can." - this sentence clearly lets us know about the excitable nature of Ishmael. The passage does not support the other options as a description of Ishmael's character. So, option E is our answer.