Answer: Option B. brain.
Step-by-step explanation:
The diencephalon is a part of the fore-brain. The forebrain is the forward most part of our brain. Fore brain is responsible for the following:
- Reproductive functions
- Body eating & sleeping routines
- Body temperature
- Emotions.
These functions are performed by dicencephalon, which is further made of 3 parts:
- Hypothalamus (integral part of endocrine system)
- Thalamus (responsible for body eating, sleeping and alertness)
- Epithalamus (responsible for body emotions)
Refer to the diagram attached.