Sorry the correct answer was C.
Argentina's vineyards are planted up to about what elevation?
C. 10,000 feet
Argentina has vineyards planted up to 9,800 feet above sea level, which is roughly a third the height of Mt. Everest (and probably higher than most of us would be willing to hike on a normal basis). At these altitudes, hail and frost are the primary vineyard concerns, however the vines also enjoy more tempered high and low temperatures and more sunlight, which are beneficial for grape development.
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