Passive communicators do all of the following except:
C. Stand up for themselves when needed.
This is true because the definition of passive is "accepting without interferance."
I think its B because Charlie is overweight and should start a exercise routine and diet but his caliper test doesn't make sense since his BMI is so high.
C. Problem focus - seems to fit the best for stress-relieving techniques
It is cell wall because the cell wall keeps it safe.