The forebrain develops from which of the following?

Consider the following statements regarding the human brain:
$1.$ The cerebrum has a highly convoluted surface,which provides space for more neurons.
$2.$ The medulla oblongata is connected to the spinal cord.
$3.$ The medulla oblongata contains centers for respiration,cardiovascular reflexes,and gastric secretions.
Which of the above statements are correct?

The $Vagus$ nerve is the $...$ cranial nerve.

The link between paracoel and diocoel is through

The temporal lobe of the cerebrum is concerned with the detection of the following sensations $EXCEPT$:

Parkinson's disease is associated with which part of the brain?