1. Which sentence is correctly punctuated?
A Alaska's oil pipeline is one of this country's greatest accomplishments.
B There were many disappointments during Californias gold rush.
C Prospectors families hoped that their's would be the claim that paid
off.
D It took the United States some time to make use of the Yukons
resources.

A. Alaska's oil pipeline is one of this country's greatest accomplishments.

Explanation:

Because it's correctly punctuated. The others don't make sense so.

"throngs rushed to the coastal area near the airport from which the plane had taken off, overloaded with relief supplies clemente wanted to make sure reached the victims of an earthquake in nicaragua."

"the day we found the sharks' teeth" i would say highlight the element of the plot as it sets its boundaries and centers the adventures of them being on a boat and cleaning spit of sand.