Answer:
Written media and digital channel
Step-by-step explanation:
In the stated problem been faced by the organizing committee or the convener of the meeting, the best combination of media and channel would be the use of written media and Digital channel.
This combination is the best because in the use of written media the ideas about the updates to a technical standards would be better represented and the advantages and disadvantages can also be highlighted clearly for the various representative to study and come to a consensus as well.
The digital channel is the best channel because it provides more security to data and easy access as well.
note : every confidential document must as well be written and stored using a digital channel hence the above choice.