by Sage Pearce-Higgins Mon Apr 13, 2020 4:33 am
Good point. As I mentioned before, I think the construction could work without the will. I don't think this is a "strict" construction of the type 'if...then...'. More than one solution may be possible and on second reading it seems to be a question of emphasis: the first statement about gestures is something general, and the second statement about conversing with another blind person is more specific and surprising. It's as if the author is emphasizing: They make gestures in these situations, and even in these situations!
Although it's great that you've noticed this - it shows that you're questioning sentence constructions and paying attention to nuances of meaning - I'm pretty sure that GMAT will not test you on something so subtle. Note that the distinction between 'will gesture' and 'gesture' isn't being tested here. When you're studying problems from the Official Guide, try to distinguish between "classic" issues, such as opening modifiers and comparison errors, and more "random" issues, such as the one above. Prioritize the classic issues and you will probably improve.