Video conferencing technologies transmit live audio and video streams, allowing participants to see and hear one another instantly. This synchronous interaction enables immediate questions, clarification and feedback similar to face-to-face classrooms. Such rich communication can enhance engagement and social presence among remote learners. Thus the main advantage described in the stem is real-time audio visual interaction.
Option A:
Option A, exclusively asynchronous, describes situations where communication does not occur at the same time, such as emails or forum posts. This contradicts the live nature of video conferencing.
Option B:
Option B, purely written, might characterise text chats or discussion boards but does not capture the audio and visual richness that video conferencing offers.
Option C:
Option C is correct because video conferencing combines sound and images in real time, approximating physical classroom experiences and supporting dynamic interactions. This property is what distinguishes it from many other online tools.
Option D:
Option D, anonymous survey-based, refers to tools like online questionnaires where learners may not reveal their identity, which is not a defining feature of video conferencing.
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