The correct option is E Temperamental but self-aware
Option E is the correct answer. Ishmael is very much aware of his emotions and tries to recover from them. It is stated in the passage that his temper had caused problems in the past, but whenever it does, he is aware enough to get away and start afresh. He is also sensitive, but his confidence doesn't surface in most situations. He hasn't exhibited any of the other behaviour enumerated in options A,B,C and D throughout the passage. Thus, being unsupported by textual evidence, the other options are incorrect.