## **Core Concept**
Mast cell stabilizers are a class of drugs used in the management of bronchial asthma. They work by preventing the release of mediators from mast cells, thereby reducing inflammation and bronchospasm. This mechanism is crucial in the prophylactic treatment of asthma.

## **Why the Correct Answer is Right**
Cromolyn sodium (Option C) is a well-known mast cell stabilizer used in the treatment of bronchial asthma. It works by inhibiting the release of histamine and other mediators from mast cells, thereby preventing the allergic response and subsequent bronchospasm. Cromolyn sodium is particularly useful for long-term control and prevention of asthma symptoms rather than acute relief.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is blank and does not provide a valid choice for consideration.
- **Option B:** This option is also blank and does not offer a viable alternative.
- **Option D:** This option is blank as well, failing to present a credible option for mast cell stabilizer.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that cromolyn sodium is most effective when used prophylactically and does not provide immediate relief during an acute asthma attack. It is often administered via inhalation and can be used in conjunction with other asthma medications for comprehensive management.

## **Correct Answer:** C. Cromolyn sodium