Concept:The labelled part is located at the front and underside of the brain, associated with the sense of smell.Explanation:In the given diagram, part labelled I lies in the anterior region of the brain, just above the nasal cavity.This region is responsible for receiving and processing smell impulses from the nose.Therefore, it is the olfactory lobe, not the cerebellum, cerebrum, or medulla oblongata.Answer:A. olfactory lobe
