Question

Which sentence contains correct punctuation?

In some areas [the deserts of Arizona and Mexico, for example] cacti are native.
In some areas-the deserts of Arizona and Mexico, for example-cacti are native.
In some areas—the deserts of Arizona and Mexico, for example—cacti are native.

Answer 1

I would say the first one is correct because a parentheses is a word, clause, or sentence inserted as an explanation or afterthought into a passage that is grammatically complete without it

Answer 2

thank you