Your just supposed to decribe what you physical life i like. Like how many jumping Jacks you do a day and how many calories you think you eat in a week!
C can be trauma from a large or small fall and it could also be used to describe a car accident b a heart attack could be life threatening and can cause death if not caught in time
B.) Because lets say there's 4 coworkers carpooling that's 1/4 of the pollution of all the coworkers driving separately.
Stress is a psychophysiological response