Step-by-step explanation:
A. True. In the case of a partial airway obstruction, the rescuer should encourage the choking victim to cough but should do nothing else. Coughing is the most effective way to dislodge an obstruction from the airway. If the victim is unable to cough or the coughing is ineffective, the rescuer should activate the emergency response system and be prepared to administer first aid for a complete obstruction.