Who among the following is most likely to have elevated levels of endorphins?

a. a 30 -year-old teacher, who is in shock after a car wreck
b. a 40 -year-old diplomat, who is relaxing on a cruise
c. a 32 -year-old store manager, who is showing symptoms of schizophrenia
d. a 17-year-old student, who is depressed after seeing low SAT scores