Emma has been accused of assaulting a stranger. She believed she was acting in self defense against an imaginary threat and exhibited paranoid behaviour. During the evaluation and court proceedings, Emma appears calm and rational, engaging in coherent conversation with her lawyer. Upon consideration, what aspect of Emma's mental state is the evaluation likely to focus on if the judge is determining whether she is criminally responsible?
a) Emma's mental state at the time of the assault
b) Emma's mental state during childhood
c) Emma's mental state at the time of the trial
d) Emma's mental state both at the time of the assault and at the time of the trial