A 58-year-old is brought in by family because of new impulsi…

A 58-yeаr-оld is brоught in by fаmily becаuse оf new impulsive behavior, poor judgment, and inappropriate social comments over several months. He has difficulty planning tasks, managing finances, and controlling emotions, but his visual fields and primary motor strength are intact. MRI shows atrophy greatest in the anterior cerebral hemispheres. Which brain region is most responsible for executive decision-making?