Answer
John cannot remember the name of this new granddaughter because the hippocampus is an important memory-forming center.
Allan is in prison for violent crimes because the amygdala is an important center in the sense of fear.
Work Step by Step
The hippocampus is an important memory-forming center. A tumor here would prevent a person from retaining memories. John, who has a tumor in the hippocampus, would experience memory issues, such as not remembering the name of his granddaughter.
The amygdala is incredibly important in the sense of fear. Allan, who is in prison for violent crimes and seems to show no fear or sense of self-preservation, would have a tumor in his amygdala.
