Spot the error and its correction in the given sentence:

"Every year, millions of people make difficult and often dangerous treks within their home country to a new nation."

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The error in the sentence "Every year, millions of people make difficult and often dangerous treks within their home country to a new nation" is: OPTIOIN 3

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The correct sentence will be "Every year, millions of people make difficult and often dangerous treks from their home country to a new nation"