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An Audience Response System (ARS) is primarily utilized for receiving feedback through electronic devices. This technology allows instructors to engage with their audience in real time, facilitating interactive responses during presentations, lectures, or training sessions. Participants can use devices such as clickers, smartphones, or tablets to submit their answers to questions posed by the instructor. This immediate feedback can enhance learning by allowing instructors to gauge understanding and adjust their teaching accordingly.

While gathering quiz results may seem relevant, an ARS focuses more on live interactions rather than solely on graded assessments. Other options, such as grading participation and handling student registrations, fall outside the primary function of ARS, which centers on fostering engagement and interaction during instructional activities. Thus, its main purpose is indeed to facilitate the collection of audience feedback efficiently and effectively.