Answer:
Thalamus.
Step-by-step explanation:
Thalamus is present in the brain just above the brain stem. Thalamus consists of large mass of grey matter present dorsally to the diencephalon.
Thalamus is situated in the cerebral cortex and midbrain. Thalamocortical radiations helps in the connection and communication of cerebrum with the thalamus. Thalamus relays information between subcortical areas and cerebrum.
Thus, the correct answer is option (B).