**Core Concept**
Normal respiratory compliance refers to the ease with which the lungs expand to accommodate air. It is a measure of the lung's ability to distend and fill with air. The normal value for respiratory compliance is approximately 200 mL/cmH2O.

**Why the Correct Answer is Right**
Compliance is calculated as the change in volume (ΔV) divided by the change in pressure (ΔP). In normal lungs, the elastic recoil of the lung tissue is balanced by the negative intrapleural pressure, allowing for easy expansion. The correct answer value of 200 mL/cmH2O reflects this balance. The lung's compliance is influenced by factors such as lung volume, airway resistance, and the properties of the lung tissue itself.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is too low, as it would indicate a very stiff lung unable to expand easily.
**Option B:** This option is too high, as it would indicate an overly compliant lung that expands excessively with minimal pressure.
**Option C:** This option is incorrect because it is not a commonly recognized value for respiratory compliance.

**Clinical Pearl / High-Yield Fact**
A decrease in respiratory compliance can indicate conditions such as pulmonary fibrosis, where the lung tissue becomes stiff and difficult to expand. This can lead to increased work of breathing and respiratory distress.

**Correct Answer: C. 200 mL/cmH2O**