Final answer:
In group communication using video conferencing, there are two unique challenges: managing multiple speakers and lack of nonverbal cues.
Step-by-step explanation:
In group communication, using a technology medium such as video conferencing, there are two unique challenges compared to individual communication. The first challenge is managing multiple speakers and ensuring everyone gets an opportunity to contribute. In virtual conferences, it can be difficult to prevent interruptions or ensure equal participation. The second challenge is the lack of nonverbal cues and body language, which are crucial for understanding the meaning behind the words. In video conferencing, participants may miss out on visual cues like facial expressions and gestures, making it harder to interpret messages accurately.