Hey there!
The answer is: B. Stress management
Explanation: Meashell seems to be highly stressed from trying to deal with the pressure of juggling both school and her part-time job. The problem even states that her heart tends to race and her hands shake, these are both signs of being stressed and anxious. The best way to improve both of these feelings is to practice Stress management and work on different breathing exercises.
I hope this helped! :-)
P.S. I go to FLVS too! Not for this course though! Best of luck! :-)