【正确答案】 C

【答案解析】解析：In the third paragraph the writer says '... language-loss hotspots such as West Africa and South America'.(The metaphor 'hotspot' can mean somewhere where there is a lot of activity, so a 'language-loss hotspot' is a place experiencing severe problems with language loss.) Distraction A: The text refers to the training of linguists in England as well as these places; it doesn't mention the language used by linguists in these countries; B: Austin, who heads the programme, is Australian, but 'programme' implies other trainers as well, whose nationality is not mentioned. Therefore we don't know that the linguists were all trained by Australians; D: The fact that 'many documentary linguists' have been trained there does not tell us how many undocumented languages there are.