The correct option is D Brainstem - forebrain
The brain is divided into forebrain, midbrain and the hindbrain.
A canal called the cerebral aqueduct passess through the midbrain. The dorsal portion of the midbrain consists mainly of four round swellings (lobes) called corpora quadrigemina. The hindbrain comprises pons, cerebellum and medulla. Midbrain and parts of the hindbrain like and pons and medulla form the brain stem.