The correct answer is C - glossary. The glossary gives definitions of important terms within a text.
<span>Concept of Government Laws</span>
Samuel Gompers began the federation of labor.
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Climate change is already affecting the Arab World in dire ways. It will cause extreme heat to spread across more of the land for longer periods of time, making some regions unlivable and reducing growing areas for agriculture. ... The Middle East and North Africa is the most water stressed region in the world.
Explanation: