Anterior choroid plexus is present on the
a)	Floor of diencephalon	b)	Cerebral hemispheres
c)	Roof of diencephalon	d)	Roof of medulla oblongata

(c)

The main parts of diencephalon are epithalamus, thalamus and hypothalamus. Epithalamus is thin non nervous part. Its anterior part is vascular and folded to form the anterior choroid plexus. Just behind the anterior choroid plexus the epithelium forms a short stalk, the pineal stalk which has a rounded pineal body.