Answer:
C). The narrator quotes facts about Mars and sounds well educated.
Step-by-step explanation:
The tone is demonstrated as the author's approach or attitude towards a particular subject matter which is reflected through the language or choice of words by the author. It serves to create the atmosphere to propose the perspective through which the audience should perceive the text. In the given excerpt, the formal and scientific tone is exemplified through the factual quotation regarding mars(choice of words) and sounding well educated as these elements like facts offer information while 'sounding well educated' is implied by the use of formal language. Thus, option C is the correct answer.