The correct option is B limbic system
The brain and the spinal cord are parts of the central nervous system. The brain and the spinal cord are covered by cranial meninges.
The brain divided into 3 parts - forebrain, midbrain and the hindbrain. The forebrain is divided into cerebrum, thalamus and the hypothalamus. The cerebrum is divided into 2 halves the right and left cerebral hemispheres but they are connected by nerve fibre tract called the corpus callosum.
The inner parts of cerebral hemispheres and a group of associated deep structures like amygdala and hippocampus form a complex structure called the limbic lobe or limbic system.
Midbrain and parts of the hindbrain like the pons and medulla form the brain stem.