Final answer:
A person with ataxia typically sees a decline in coordination from large to small range movements due to the loss of voluntary movement control, representing a progression from option a) Large to small range.
Step-by-step explanation:
A person with ataxia typically experiences a progression from large to small range movements, meaning the answer to the question is option a) Large to small range. Ataxia is a movement disorder of the cerebellum that results in a loss of coordination in voluntary movements. Initially, this may manifest as difficulties with larger range movements, such as walking or reaching for objects. As the condition progresses, the person may experience greater difficulty with fine motor skills, like writing or buttoning a shirt. This deterioration in motor function is characteristic of cerebellar damage, and the range of movement affected can progress over time.
It's also important to acknowledge that ataxia affects individuals differently due to various underlying causes, such as genetic mutations in spinocerebellar ataxia (SCA) or complications from different nervous system disorders. These different types contribute to a spectrum of ataxic symptoms, which can vary among individuals.