Levees are beneficial to human settlements by preventing rivers from flooding their banks as often. Thus, the correct option is A.
Levees may be characterized as a natural or synthetic barrier that precludes and obstructs the water from running where we don't want it to move.
Levees are constructed when water compels the depositions to the flank of a river. They function as a natural barricade and control floods.
Levees control the flow of water from proceeding into the regions where there is a human settlement. They dissuade the rivers from flooding cities in a hurricane or storm or any other natural calamity overflow.
Therefore, the correct option for this question is A.
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