**Core Concept**
Tremors on movement, also known as intention tremors, are a type of tremor that occurs when a person attempts to make a voluntary movement. This phenomenon is typically associated with cerebellar dysfunction, which affects the coordination and regulation of movements.

**Why the Correct Answer is Right**
The cerebellum plays a crucial role in motor coordination and learning. Damage to the cerebellum, such as that caused by cerebellar lesions or cerebellar degeneration, can lead to intention tremors. This type of tremor is characterized by a rhythmic, oscillatory movement that worsens as the limb approaches the target. The cerebellum's role in motor coordination is mediated through the cerebellar cortex, which sends signals to the thalamus and from there to the motor cortex. The disruption of this pathway can result in intention tremors.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the core concept of intention tremors.
**Option B:** This option may be related to another type of tremor, such as resting tremor, which is characteristic of Parkinson's disease.
**Option C:** This option is not a recognized cause of intention tremors.

**Clinical Pearl / High-Yield Fact**
When evaluating a patient with tremors, it is essential to assess the type of tremor, its severity, and its impact on the patient's daily activities. Intention tremors are often associated with cerebellar dysfunction and can be a sign of underlying neurological disorders.

**Correct Answer:** C. Cerebellar dysfunction.