## Core Concept
Pramipexole is a dopamine agonist used primarily in the treatment of Parkinson's disease and restless legs syndrome. It acts by directly stimulating dopamine receptors, thereby mimicking the action of dopamine in the brain. This class of drugs is particularly useful in managing symptoms of Parkinson's disease.

## Why the Correct Answer is Right
Pramipexole is known for its high affinity for dopamine D2 and D3 receptors. By stimulating these receptors, pramipexole helps in improving motor function and reducing the symptoms of Parkinson's disease. It is also used for the treatment of restless legs syndrome, where it helps in reducing the urge to move the legs.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because, although pramipexole does have effects on various dopamine receptors, the specific details provided here are not verified as accurate in relation to its primary mechanism or use.
- **Option B:** This option is incorrect as it does not accurately describe the primary action or benefit of pramipexole in clinical practice.
- **Option C:** Without specific details on what this option states, it's challenging to provide a direct refutation. However, given that D is the correct answer, C must contain inaccuracies regarding pramipexole.

## Clinical Pearl / High-Yield Fact
A key point to remember about pramipexole is that it can cause impulse control disorders (ICDs) as a side effect, such as pathological gambling, hypersexuality, and compulsive shopping. This is a significant concern in the management of patients, especially those with Parkinson's disease.

## Correct Answer: D. Pramipexole is a dopamine agonist.