Which enzyme's abnormal activity is linked to the development of Parkinson's disease?

A Tyrosine hydroxylase
B DOPA decarboxylase
C Monoamine oxidase ✓
D Catechol-O-methyltransferase

Explanation

Monoamine oxidase (MAO) is involved in the breakdown of dopamine, and its abnormal activity has been linked to the development of Parkinson's disease.

Source

Biochemistry textbooks
Enzymes in Disease Biochemistry Neurodegenerative Diseases Medium MEDICAL Confidence: high