you will pick a scene or series of scenes in which the question of identity comes up and a character either reveals who they are or evolves in some way. Pick scenes in which the interpersonal aspect is important such as when characters act based on what they think others want or think.
Look for ways in which authors describe characters and the factors that make them who they are.
What shapes the main characters?
What conflicts arise?
How do their "encounters with the Other" define who they are?