Reading Comprehension (RC) | Re: As to when the first people populated the American subcontinent is hot

GMATNinja GMATNinja Two

Hi GMATNinja,
I was wondering could you please explain Q3? I got that one wrong and choose option B instead of option A based on the following statement from the passage: "Additionally, they were believed to have fashioned a primitive form of cramponso that they would be able to dock in these refugia and avail themselves of the microfauna . Doesn't this say that they docked their boats in the refugia and then used microfauna themselves? Did I misunderstand this statement?
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