In the given question, a word has been given and there

Solution

 a) 'Pool' means 'a small area of still water, typically one formed naturally' (when acting as a noun); and 'accumulate' (when acting as a verb). b) 'Pool'(noun) - A shared supply of vehicles or resources to be drawn on when needed. Sentence i after rearrangement - 'Significant facelift was made to pool out exotic elegance that has made the German automaker remarkable in the auto industry.' In sentence i: 'Pool out' is not a meaningful usage and can be replaced with 'pull out' (to remove) to make the sentence meaningful. Sentence ii after rearrangement - 'Someone grabbed the dough and Dean didn't believe Baratto or the twins had either the brains or nerve to pool off a heist like that, much less stay mum about it for months.' In sentence ii: 'Pool off' is not a meaningful usage and needs to be replaced with 'pull off' (achieve; succeed in doing something) to make the sentence meaningful. Sentence iii after rearrangement - 'The internet, however, ushered in new ways of asking for money, particularly with the rise of crowd funding, the practice of pooling donations from a large number of individuals.' In sentence iii: Here, 'pooling' acts as a verb and means 'accumulating' and makes perfect sense in the sentence [to accumulate donations from many individuals]; thus, this sentence uses the given word correctly. Answer is option (d).