Answer: contour lines.
Topographic maps are easily recognized by their contour lines.
Various phenomena, such as rainfall, snowmelt, monsoons, typhoons, hurricanes, and cyclones can cause rivers to<u> </u><u>flood</u> their banks.
Flooding typically takes place while prolonged rain falls over numerous days, heavy rain falls over a brief length, or whilst an ice or debris jam causes a river or circulates to overflow onto the surrounding place. Flooding can also result from the failure of water manipulate structures, including a levee or dam.
The most essential sources of flood-inflicting precipitation and runoff within America are extratropical cyclones and their associated fronts; convective thunderstorms, especially after they arise in mesoscale convective structures; and tropical cyclones.
Learn more about floods here: brainly.com/question/20292873
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The answer is B. The citys tax base begins to increase because if it is redlines then they have to move somewhere else where it is harder to get money so they have to increase the taxes