Answer :

Final answer:

When encountering an unresponsive adult who is choking, the appropriate first aid response is to perform CPR.

Explanation:

When encountering an adult who is choking and unresponsive, the first aid response is to perform CPR (cardiopulmonary resuscitation). CPR involves manually compressing the chest at least 5 cm deep and at a rate of 100 compressions per minute. The emphasis is on performing high-quality chest compressions to circulate blood and deliver oxygen to the vital organs, rather than providing artificial respiration.

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