Question

tourists now have to stay in the neighboring towns if they want to visit salar de uyuni.
where is the best place to insert this sentence?
after sentence 10
after sentence 11
after sentence 13
after sentence 14
(previous text: ... 2. (6) the salt mines and the salt crust of the salar have certain minerals people need for different reasons. (7) there are both quantities of sodium, which is what we consider table salt, and which people used to ingest in small quantities to stay healthy. (8) there is also potassium, boron, lithium, and magnesium. (9) some of these minerals are used in medications, some are used to make batteries (you have no doubt heard about lithium powered electric batteries), and some are used, as mentioned, to season our foods.

1. (10) there are small towns all around the salar. (11) people live and work in these regions, some of them in jobs directly related to salt and mineral mining. (12) others work in the tourist industry that has sprung up around the salar, as people from all over the world want to see this incredible and unique landscape. (13) there was even a hotel in the middle of the salar for a couple of years that was built out of salt bricks. (14) however, it shut down because of safety concerns.)

Explanation:

To determine the best insertion point, we analyze the context. The sentence about tourists staying in neighboring towns relates to the tourist industry around Salar (discussed in sentence 12) and the hotel (sentence 13) that closed (sentence 14). After sentence 13, which talks about the hotel in the Salar, the new sentence explains tourists now stay in neighboring towns (due to the hotel's closure, as sentence 14 mentions safety concerns). So inserting after sentence 13 connects the hotel's closure to tourists' accommodation change.

Answer:

After sentence 13