The Karakorum is somewhat of a copout. Unlike the other ice sheets here, it is not a continuous ice sheet, but instead a measurement of all land covered in ice in that region, including mountainsides, as I could not find any measurements of any particular ice sheets in that region. There probably is enough ice there for part of the Karakorum to count, but the number here is a bit iffy. Sat on this quiz for a good 6 months before submitting due to this issue.
Please, don't require us to add the words "Ice Sheet" or "Ice Cap" or "Glacier" after the answer. Surely the name should be enough? Also, I think that you've not spelled Vatnajokull correctly.
Agreed on that first part. I was actually under the assumption that I had already did this, that I didn't was probably an artifact of sitting on a quiz for so long. Fixed the name of Vatnajokull, should have caught that.