Answer :
Final answer:
Neurodegenerative disorders, such as Alzheimer's and Parkinson's diseases, involve the progressive loss of neuronal structure and function, often worsening over time and leading to symptoms like balance and movement issues. The correct option is d.
Explanation:
Neurodegenerative disorders are characterized by the progressive loss of structure or function of neurons, including their death, often leading to degenerative diseases such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis (ALS), and Huntington's disease.
Unlike options a) Cardiovascular diseases and b) Infectious diseases which involve the heart, blood vessels, or are caused by pathogens respectively, neurodegenerative disorders relate specifically to the nervous system. Option d) Genetic disorders can be linked with neurodegeneration if the genetic mutation affects neuronal health and function.
However, neurodegenerative disorders are more accurately described as either being caused by environmental factors, genetic predisposition, or a combination of both. As definition suggests, these conditions deteriorate over time, causing diverse symptoms based on the region of the nervous system affected, such as balance and movement issues with Spinocerebellar ataxia. The correct option is d.
