It's actually shot in South Africa - the series is a BBC/German/British co-production.
A linguist studies language in a scientific way; so not just a certain language like Spanish, Mandarin or such, but how a language is written, communicated, it's forms, etc.
The source could provide fake information
what? i don't understand what you are asking of saying.
The Correct answer is C. From ever using a nuclear weapon again