Answer: Option B
Explanation:
The red pin is placed in the thalamus region. This region helps in sending receiving all the sensory information from the stimuli and transferring it to the cerebral cortex part of the brain for the processing of information.
The green pin lies in the region of lateral ventricle are two ventricles in the brain which contains cerebrospinal fluid which provides protection to the brain and acts as cushion of the brain.
The blue colored pin is placed in the cerebellum. It is the correct option.