You can cancel out A. And C. Out which leave two answers. D and B and considering buildings could be a way of adaption along with flood control systems. B makes the most sense.
Answer:
139
Explanation:
<1 of f=41
Corresponding angles are equal
<2of f =139. (Linear pair)
180-41
True. The volcanic lowlands were the source of obsidian, jade, and hermatite that the Mayans used to develop a lively trade.