In which part of the following is the anterior choroid plexus situated?

The cavity present in the spinal cord is called....

Statement-$I$: Fibres of the tracts are covered with the myelin sheath,which constitute the outer part of the cerebral hemisphere.
Statement-$II$: The hypothalamus contains a number of centres which control body temperature,urge for eating and drinking. In the light of the above statements,choose the most appropriate answer from the options given below:

In the anatomy of man,the aqueduct of Sylvius occurs in:

The association areas are not responsible for

The human brain is covered by a tough outer covering known as: