The dust storms are called"black blizzards" because A of how cold the storms are. B of how dark it gets when the dust kicks up. C it often snows during the storms. D the storms usually come at night.

## Step 1<br />The term "black blizzards" is used to describe dust storms. The term "black" in this context does not refer to the temperature of the storm, but rather to the visibility during the storm.<br />## Step 2<br />During a dust storm, the visibility can be so low that it becomes almost impossible to see anything, creating a dark, blizzard-like scene. This is why the term "black blizzards" is used.<br />## Step 3<br />The term "black blizzards" does not refer to the temperature of the storm, the occurrence of snow during the storm, or the time of day when the storm occurs.