What Does either scenario refers to in following text? Most videoconferencing applications can be applied to XXX. A customer’s need to communicate clearly using stunning high definition video combined with high quality audio, rich features and an easy to use interface do not diminish in either scenario.

Is jobber a good word for describing someone who misuses people financially and overcharge them? can I use jobber for somebody which takes people's money and doesn't serve them as s/he promised? Thank you very much for your help

Is it correct to say a mountain is spread over a country? If a mountain is located in a country from east to west, then can we say: mountain X is spread over the country? Thank you in advance

what does this means: When possible, try to use open-ended questions where the prospect needs to elaborate as opposed to simply answering "yes" or "no."

this senor is wound up as tight as a yoyo what does the second sentence mean in the following text? no wonder he is here for a heart bypass, this senor is wound up as tight as a yoyo.