Answer:
The correct option is Option C i.e. its hydrophobic.
Explanation:
The side chain of valine is isopropyl group. It is a hydrocarbon side chain. Isopropane is a hydrophobic compound. So as it joins with the amino acid skeleton as a variable group, it makes the whole amino acid hydrophobic.
Its hydrophobic nature is well evident from the disease of sickle cell anaemia. The replacement of hydrophilic glutamate by hydrophobic valine makes the interaction of haemoglobin by changing other components.