Kelly is a 22-year-old woman who was involved in a motor vehicle accident (MVA) 1 year ago. She now presents to the mental health clinic with her mother, who complains that Kelly's personality has changed drastically in the past year. Upon thorough examination, Kelly most likely has experienced an injury to which part of her brain?

Choice A reason: The occipital lobe primarily processes visual information; injury here would result in visual deficits rather than changes in personality. Choice B reason: The frontal lobe is responsible for personality, executive functioning, judgment, and emotional regulation. Damage to this area, such as from a traumatic brain injury, can cause significant personality changes, impulsivity, and altered behavior. Choice C reason: The parietal lobe integrates sensory information and spatial orientation. Damage would affect perception and coordination rather than personality. Choice D reason: The temporal lobe is associated with memory, hearing, and language comprehension; injury may result in memory deficits or language problems but not dramatic personality changes.