Read the passage.
Popcorn is a snack that is found most everywhere, but where it originated may be surprising. Thanks to the production of corn, we can enjoy
popcorn. Evidence suggests that corn arrived in the American Southwest over 2,500 years ago. However, corn was not grown east of the
Mississippi until the early 1800s due to the poor soil quality. With advances in agriculture, over time, corn was able to grow just about anywhere.
This made a once well kept Southwestern secret, a new national staple.
Which sentence from the passage best expresses the main idea of the passage?
A.
Thanks to the production of corn, we can enjoy popcorn.
B.
Evidence suggests that corn arrived in the American Southwest over 2.500 years ago.
C.
This made a once well kept Southwestern secret, a new national staple.