10 people are sitting in a room. If they want to communicate with each other, Coaxial cable be the best transmission media to be used as it supports multi channel.

so, if we need to add more devices then we can extend it.

Also there are some features of coaxial cable which make it best multi channel

transmission media:

Coaxial cables support high bandwidth.

Easy to install coaxial cables.

Coaxial cables have better cut-through resistance so they are more reliable and durable.

Less affected by noise or cross-talk or electromagnetic inference.