It should be a im pretty sure
The sentence from the introduction paragraph that serves as the author's thesis is: "<em>Yet key technological developments caused a rapid growth in American urban areas</em>."
A thesis statement is, by definition, the sentence that captures the main idea and your point of view on it on your article.
The sentence that I believe best represents what the author meant to present to the readers is one that briefly explains his view on the topic mentioned in the title, which is the positive effect of technological advancements on a city's growth.
DeShawn is a smart kid who knows to stay away from drugs, but his family is very poor. His friends use their drug money to buy nice things like the newest shoes, and this bothers him.
