What is the function of the 'choking' maneuver for an adult?

The 'choking' maneuver for an adult is designed specifically to create abdominal thrusts, also known as the Heimlich maneuver, in order to dislodge an object that is blocking the airway. When an object obstructs the airway, it can prevent the individual from breathing, leading to serious complications. The abdominal thrusts increase intra-abdominal pressure, which helps to push air from the lungs with enough force to expel the obstruction. This technique is critical in emergency situations where a person cannot breathe due to choking.

The other options focus on different actions that are not directly associated with relieving choking. Calling for help is important but does not address the immediate need to clear the airway. Mouth-to-mouth resuscitation is intended for situations where a person is not breathing, not specifically for choking. Administering back blows is another technique sometimes used for choking, but it is generally used in conjunction with abdominal thrusts for maximum effectiveness. Therefore, the primary function of the choking maneuver is to perform abdominal thrusts to help clear the obstruction from the airway.