In the diagram illustrating the organization of the brain, which part labeled 'a' is most likely to be the cerebellum?

• A. Thalamus
• B. Medulla oblongata
• C. Frontal lobe
• D. Cerebellum

Answer: (D)

Verified step by step guidance

1. Step 1: Understand the basic anatomy of the brain and the typical locations of its major parts. The cerebellum is located at the back and bottom of the brain, underneath the occipital lobes and behind the brainstem.
2. Step 2: Identify the labeled parts in the diagram. The thalamus is usually located near the center of the brain, the medulla oblongata is part of the brainstem at the base of the brain, and the frontal lobe is at the front of the brain.
3. Step 3: Compare the position of the label 'a' in the diagram to these known locations. If 'a' is positioned at the lower back part of the brain, it is most likely the cerebellum.
4. Step 4: Recall the function of the cerebellum, which is involved in coordination, balance, and fine motor control, to reinforce why its location is distinct from the other parts.
5. Step 5: Conclude that the part labeled 'a' is the cerebellum based on its anatomical position in the diagram relative to the other labeled brain structures.