Check out the question:

https://www.beatthegmat.com/christopher- ... 31488.html

Only choice A has travelling or does it have sailing, while all others have sailing or some form of the word "sail". Is that the same ? How ? I know it's illogical if we think that christopher columbus took flight west, but this is a sentence correction question. Does the change in a word like travelling to sailing, change the meaning of the sentence? Why not?

Or is this just a typo. Because everywhere this question is asked, the same mistake has been repeated!