B) exercise-associated muscle cramps
Answer:
<em>Urban</em><em> </em><em>areas</em><em> </em><em>are</em><em> </em><em>affected</em><em> </em><em>by</em><em> </em><em>migration</em><em>.</em><em> </em>
It could possibly be mental because it has to do what you believe in but it could also be social because you need your parents and peers/ culture to define who you are and what you choose to be