The author included the section "How High Can We Go?" most likely to emphasize that -
O A. the designs commonly used in today's tall
buildings are complex
B. the ability to construct tall buildings has
increased greatly over time
O c. the need for tall buildings has remained
constant over time
O D. new technology and materials have lowered
the cost of building tall buildings
Please make it quick

B. the ability to construct tall buildings has  increased greatly over time

Explanation:

In the article, Marvels of the Modern World, the author under the section "How High Can We Go?" gives a brief rundown from the first tallest building in the world to the current tallest building in the world. According to her, the first tallest building in the world was the Empire State building completed in 1931 in the United States. This was followed by the twin towers, the World Trade Center, the Sears Towers, the Petronas Towers, the Tapei 101, and today the Burj Khalifa in Dubai.

As time progressed, the author noted that better designs have evolved to aid the construction of these buildings.

answer; (external conflict)