Hi!
The correct option would be B. Brain.
The diencephalon is the major part of the forebrain. It is located between the telencephalon and the midbrain. The structures that compose it include: thalamus, the epithalamus, the subthalamus and the hypothalamus. The diencephalon is an essential vessel formed during embryogenesis , dervived from prosencephalon.
Hope this helps!
I am not sure if this is a true or false question, but I am guessing it is. So that would mean it would be False.
True because they are like man made pain killers that your body produces
