Answer:
Huntington's disease. (Ans. A)
Explanation:
Huntington's disease: It is known as the inherited disorder (degenerative) which cause the breakdown of the central nervous system.
Huntington's disease mainly causes functional abilities, and result in movements (such as slow eye movement, muscle problem like dystonia and rigidity), psychiatric (such as insomnia, feeling of sadness and loss of energy), and cognitive disorder (such as lack of action, and flexibility, slowness on finding words, etc.)
