I believe this is a dependant clause
Answer :
Most Teenagers Only Work During The Summer When They Have Vacations And Don't Need To Completely Focus On Studies.
Explanation :-
They're Being Strategic.
The way this quote helps the author develop the claim that border walls will not discourage immigration is A: It establishes some of the conditions that might force people to flee their home countries.
<h3>What is a Claim?</h3>
This refers to the statement or assertion that is made about a thing that needs to be validated.
Hence, we can see that from the author talks about the many reasons for migration and how a border wall is unlikey to deter them and this can be found in option A.
Read more about claims here:
brainly.com/question/2748145
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