What is the most anterior part of the brain, consisting of two hemispheres and responsible for reasoning, planning, memory, and conscious thought?

• A. Cerebrum
• B. Cerebellum
• C. Brainstem
• D. Thalamus

Answer: (A)

The cerebrum is the part of the brain responsible for higher-order thinking, including reasoning, planning, memory, and conscious thought. It sits at the front and top of the brain and is made up of two hemispheres, connected by a large bundle of nerve fibers. The frontal lobes in particular drive planning and decision-making, while memory and other cognitive functions involve various areas across the cerebrum. By contrast, the cerebellum lies at the back and below, mainly coordinating movement; the brainstem controls basic life-support functions; and the thalamus acts as a relay station for sensory information heading to the cortex. So, the described structure is the cerebrum.