Mr. McCurdy gestured toward my camera. “Maybe someday you’ll show us all how you use that thing,” he said. The sentences serve as an example of

A. sarcasm.

B. irony.

C. flashback.

D. foreshadowing.

we would need to be able to read the passage in question to determine which factor allowed david believe he could defeat goliath. post the passage, and i'd love to out.

"urban sprawl, the spreading of large developments of housing and shopping areas around a city’s center, has many negative cultural and environmental effects. " (from your link)

so, your answer is: it has a negative effect on the environment, otherwise known as c~hope this mate. 

a white heron is a short story by american author sarah orne jewett. first published in 1886, it was later used as the title story in a white heron and other stories.