**Core Concept**
Intention tremor is a type of tremor that occurs when a person is attempting to perform a voluntary, goal-directed movement, such as reaching for an object. It is characterized by a high-frequency, low-amplitude tremor that worsens as the limb approaches the target.

**Why the Correct Answer is Right**
Intention tremor is typically associated with lesions in the cerebellum, particularly in the cerebellar hemispheres or the cerebellar peduncles. The cerebellum plays a crucial role in coordinating movements and maintaining posture. Damage to the cerebellum can disrupt the normal functioning of the cerebellar circuitry, leading to the development of intention tremor. This type of tremor is often seen in patients with cerebellar degenerative diseases, such as spinocerebellar ataxia or olivopontocerebellar atrophy.

**Why Each Wrong Option is Incorrect**
**Option A:** Parkinson's disease is associated with resting tremor, not intention tremor. While Parkinson's disease can cause tremors, they are typically more pronounced at rest and improve with movement.

**Option B:** Essential tremor is a common cause of tremor in the general population, but it is typically characterized by a postural tremor, not an intention tremor. Essential tremor can also occur during action, but it is usually more prominent at rest or during postural tasks.

**Option C:** Multiple sclerosis can cause a variety of neurological symptoms, including tremors. However, the tremors associated with multiple sclerosis are often more variable and may not be as clearly intention-related as those seen in cerebellar lesions.

**Clinical Pearl / High-Yield Fact**
Cerebellar lesions can also cause ataxia, dysarthria, and nystagmus, in addition to intention tremor. It's essential to consider the entire clinical picture when evaluating a patient with suspected cerebellar disease.

**Correct Answer: C**