The bad weather that scientists have to overcome in Antarctica is

The polar regions are extremely cold, windy and have little precipitation. In summer, the sun is always on the horizon, but the height of the sun is small and the sunlight is weak, which can't dispel the cold on the ice sheet at all. In winter, the night is quiet and the night is long, and the snowstorm keeps roaring on the ice sheet. Antarctica and the Arctic Ocean are endless worlds of ice and snow.

Therefore, choose: B.