Answer:
The correct answer is Tay-Sachs disease.
Explanation:
Tay-Sachs disease is an autosomal recessive genetic disease that causes the degeneration of the nervous system. This disease only expresses itself if an individual has two recessive copies of a particular gene that cause this disorder.
The reduced level or absence of an essential enzyme beta-hexosaminidase causes this disorder.
Thus, the correct answer is Tay-Sachs disease.
