**Core Concept**
Continuous Positive Airway Pressure (CPAP) is a **non-invasive ventilation** technique used to treat **obstructive sleep apnea (OSA)**. It works by providing a constant stream of air pressure into the airways, keeping them open during sleep. This prevents the collapse of the airway, reducing **apneic episodes**.

**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the general principles of CPAP. CPAP is effective in reducing **symptoms of OSA**, such as daytime sleepiness, and improving **quality of life**. It also reduces the risk of **cardiovascular complications** associated with OSA. The pressure is typically adjusted to the minimum required to prevent **upper airway obstruction**.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, we cannot determine its accuracy.
**Option B:** Similarly, without the details of option B, its correctness cannot be assessed.
**Option C:** The same applies to option C, as the content is missing.
**Option D:** Option D's validity also depends on its content, which is not provided.

**Clinical Pearl / High-Yield Fact**
A key point to remember about CPAP is that it is most effective when used consistently and as prescribed. **Compliance** is crucial for the success of CPAP therapy.

**Correct Answer:** No answer provided.