The Clean Air Act - United States federal law designed to control air pollution on a national level.
Urban areas should be correct unless you were given options to choose from.
My answer is A. Always go back and look at your textbook!
Happy studying ^-^
Answer:
Hitler assumed power in March 1933, with the passage of the Enabling Act of 1933 by the Reichstag in that month, granting him greater authority. On 30 January 1933, following a succession of legislative elections and subsequent backroom intrigues, President Paul von Hindenburg appointed Hitler as Chancellor.
Explanation:
I'm pretty sure it is A: General Principles; Ethical Standards..
Hope this helped, have a great day! :D