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The response that demonstrates closed-loop communication is the choice where the medical assistant states, "I’ll go get the AED." This response is effective in a critical situation because it clearly conveys the assistant's understanding of the task that needs to be completed. Closed-loop communication involves a sender clearly articulating a message and ensuring that the receiver has heard and understood the instruction accurately. By explicitly stating the action they will take, the medical assistant confirms their awareness of the situation and provides reassurance to the team that they are taking appropriate action.

The act of stating “I’ll go get the AED” not only confirms the task but also signifies accountability, as the assistant is responsible for retrieving the automated external defibrillator. This type of communication supports teamwork and enhances efficiency in emergency situations, reducing the potential for confusion and ensuring that everyone is aware of who is handling what responsibilities.

The other responses lack this element of clarity. For example, simply saying “OK” does not indicate a specific action or acknowledgment of what needs to be done. Similarly, “I’ll call 9-1-1” indicates awareness of another important action, but it does not involve a mutual confirmation of tasks among the team. The same applies to stating “Begin CPR, I’ll gather the