Question

read the selection and answer the questions that follow
salar de uyuni: the bolivian salt flats
introduction
craig wrote a report on a place in south america. read craig’s report for revisions that need to be made. when you finish reading, answer the questions.
1 (1) salar de uyuni—which translates to mean “the enclosed salt flat”—is the largest salt flat in the world. (2) standing on it feels like standing in the middle of a white desert, except unlike a desert, this land is entirely flat. (3) that’s because it was formed millions of years ago on the location of ancient lakes; when all of the lakes’ water evaporated, a crust of salt was left on the surface. (4) imagine putting a container of water in the freezer all night; in the morning, it would have a hard, crusty, and very

1. craig wants to add a concluding sentence to his report. which sentence can be added to accomplish this goal?

○ with large deposits of sodium, potassium, borax, lithium, and magnesium, salar de uyuni is a place worth preserving.
○ standing on the salar de uyuni feels like standing in the middle of a white desert, reminding the visitor of ancient history.
○ salt is the most important mineral in the world, and salar de uyuni is worth millions of dollars to modern bolivia.

Explanation:

To determine the correct concluding sentence, we analyze the purpose of a conclusion: it should summarize the main points or emphasize the significance of the topic (Salar de Uyuni).

• The first option ("With large deposits... worth preserving") highlights the mineral deposits and the importance of preserving the salt flat, which connects to the information about its formation (ancient lakes, salt crust) and its uniqueness (largest salt flat).
• The second option focuses on the "ancient history" reminder, but the report’s content (formation, size) does not emphasize history as a central theme.
• The third option overstates salt’s importance ("most important mineral") and introduces a monetary value angle not discussed in the report.

Thus, the first option best concludes by tying the salt flat’s unique features (mineral deposits) to its value as a place to preserve.

Answer:

A. With large deposits of sodium, potassium, borax, lithium, and magnesium, Salar de Uyuni is a place worth preserving.