The informal answer to your question is "clipboard". However, there isn't such a thing as the "clipboard". The people who came up with the idea of the clipboard use that nomenclature to describe the location in memory where that copied data resides. So the formal answer to your question is memory or RAM.
The answer would be A.
The rest seem impractical.
Answer:
a. Routing protocol
Explanation
Routing protocol is a layer 3 (Network layer) protocol used by routers to exchange information about available routes , their associated costs and delays.
Answer:
Thank you have a nice day:)
