Question

Which of these people is experiencing stress? Brian has recently had to take care of his ailing grandma and his grades have slipped. He has become very moody and gets angry very quickly. Gia likes to spend her days doing nothing and gets angry when her mom asks her to clean up her room or do some other chore. Tania is very particular about her possessions and loses her cool the moment anyone touches them.

Answer 1

Well, Brian is most likely under stress. Gia, just gets angry when she is asked to do something. Tania, just likes her things a certain way. She is very particular, and if you touch it she gets mad/angry, not stressed.  

Answer 2

Brian is the one experiencing stress, provided that his grades are below the baseline.