C

Reasoning: Cerebellar damage classically causes impaired coordination such as nystagmus, dysmetria/past-pointing, and a wide-based ataxic gait. Its tremor appears during movement (postural or intention) and is absent at rest; resting tremor is characteristic of basal-ganglia (e.g., parkinsonian) lesions, not cerebellar ones [Kovács, 2019, PMID 30963396; Smaga, 2003, PMID 14596441].