IRD stands for the sub-categories of Interactive Communication- what are they?

This is an extract from the CAE Speaking Assessment scales is it a band 1 or 3 or 5?- "Interacts with ease.....Widens the scope of the interaction....."

" Let´s start with this one- I think this is a good option" - Which is this an example of in IC - Intiating, Responding or Development?

This is from the CAE Speaking scales for IC- is this a band 1 or 3 or 5?- "Initiates and responds appropriately, linking contributions to those of other speakers. Maintains and develops the interaction and negotiates towards and outcome"

This is an extract from the CAE Speaking Assessment scales for IC - is it a band 1 or 3 or 5?- "...negotiates towards an outcome with very little support."

"Yes, I agree. It´s also the most interesting" -Is this an example of Initiating, Responding or Developing?

What are these examples of? Initiating, responding or developing?- "What about bringing a camera for the holiday?" or "Why´s that?"

"Shall we move on to this one?" - What is this an example of - intiating, responding or development?