Reflexes for maintaining vital functions like blood pressure are localised in

Given below are two statements:
Statement $I$: The cerebral hemispheres are connected by a nerve tract known as the corpus callosum.
Statement $II$: The brain stem consists of the medulla oblongata,pons,and cerebrum.
In the light of the above statements,choose the most appropriate answer from the options given below:

The correct sequence of meninges of the brain from outside to inside is:

Coughing and sneezing are controlled by . . . . . . .

Match the structures in Column $I$ with the structures connecting them in Column $II$:

Column $I$	Column $II$
$(a)$ Cerebral hemispheres	$(i)$ Habenular commissure
$(b)$ Two lobes of thyroid gland	(ii) Corpus callosum
$(c)$ Cerebellar hemispheres	(iii) Isthmus
$(d)$ Thalami	(iv) Vermis

How many pairs of cranial nerves are purely sensory?