**Core Concept**
Epley's maneuver is a series of maneuvers used to treat benign paroxysmal positional vertigo (BPPV), a condition characterized by brief but intense episodes of vertigo triggered by specific head movements. This condition occurs due to the displacement of calcium particles (otoconia) from the utricle of the inner ear into the semicircular canals. The primary goal of Epley's maneuver is to move the otoconia back into their normal position in the utricle, thereby alleviating the symptoms of BPPV.

**Why the Correct Answer is Right**
Epley's maneuver involves a series of five movements, including the supine roll, side-lying roll, sitting position, and Dix-Hallpike maneuver. The supine roll and side-lying roll help to move the otoconia from the posterior semicircular canal into the lateral semicircular canal. The Dix-Hallpike maneuver is used to visualize the direction of the nystagmus, which helps in identifying the affected ear. The patient is then placed in a sitting position to allow the otoconia to settle into the utricle.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not mention the specific steps involved in Epley's maneuver, which are crucial for the successful treatment of BPPV.

**Option B:** This option is incorrect because it does not mention the role of the Dix-Hallpike maneuver in visualizing the direction of nystagmus, which is essential for identifying the affected ear.

**Option C:** This option is incorrect because it does not mention the supine roll and side-lying roll, which are essential steps in moving the otoconia from the posterior semicircular canal into the lateral semicircular canal.

**Clinical Pearl / High-Yield Fact**
It is essential to note that Epley's maneuver should not be performed on patients with a history of recent head trauma or those with a suspicion of central nervous system pathology, as it may exacerbate the condition.

**Correct Answer:** D.