**Core Concept**
The American Heart Association (AHA) guidelines for cardiopulmonary resuscitation (CPR) provide recommendations on the optimal rate and depth of chest compressions to improve the chances of successful resuscitation. The guidelines are crucial for healthcare professionals to follow in emergency situations.

**Why the Correct Answer is Right**
The 2005 AHA guidelines emphasized the importance of maintaining a high-quality chest compression rate of 100-120 per minute. This rate is essential to ensure adequate blood circulation and perfusion of vital organs during CPR. The guidelines also recommended a compression depth of 2-3 inches (5-7.5 cm) to minimize the risk of cardiac injury.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify the correct compression rate according to the 2005 AHA guidelines.
**Option B:** This option is incorrect as it does not mention the recommended compression depth.
**Option C:** This option is incorrect as it suggests a compression rate that is lower than the recommended 100-120 per minute.

**Clinical Pearl / High-Yield Fact**
The AHA guidelines emphasize the importance of continuous chest compressions without interruptions, as they can significantly improve the chances of successful resuscitation. This is often referred to as "hands-only CPR" or "continuous chest compressions."

**Correct Answer: B. 30 chest compressions to 2 ventilations.**