All legislative power in the government is vested in Congress, meaning that it is the only part of the government that can make new laws or change existing laws. ... The President may veto bills Congress passes, but Congress may also override a veto by a two-thirds vote in both the Senate and the House of Representatives.
B is the answer.
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Back then, the most crucial urban problems that Riis touch was Unavailability of laws that require tenants to maintain their place up to safety standards.
This make a lot of renters must endure gruesome condition of living such as poor quality of water, inproper amount of sun light, Pests infestation, toxic substance near living area, etc.
Roads, housing, development, fire services, environment