The answer is: "cramp" .
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"A <u></u><u> cramp </u> is a painful localized muscle spasm named for its cause."
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Meteor- creates crators
nuclear wafare- no more life
The root word which means "red" is a. erythr/o.
Just think about biology - you should know that red blood cells are called erythrocytes, where you can obviously see that root word.
Leuk/o refers to white color, and the other two options do not refer to colors at all.
