always as a teacher to help you if you don't know what to do
The discussion technique that Jennifer uses most clearly in this conversation is, challenging assumptions.
When we want to give a discussion a different approach, we use this technique through What if... questions, it is necessary to present another alternative to respond to things that we already established.
The other techniques are very different from this one, promoting participation would be mostly used by a moderator not a regular participant in the conversation, MAking an objective is to land the discussion into something real, and Asking for rhetorical questions does expect any kind of answer which we do have in here, therefore the other three options are incorrect.
Hello, the correct answer is "why". "Let's meet in the library to study." Why? "So that you can prepare for the finals."
If you mean figurative language then
"air of night"
Noise is anything that might interfere with the communication
