Ambivalent: having mixed feelings about something
Incendiary: used or adapted for setting property on fire
Cerebral: betraying or characterized by the use of the intellect rather than intuition or instinct
Culpable: deserving blame or censure
So the answer is Option C).
"exuberance" means enthusiasm or showing a lot of energy. if someone holds back a cry of pain, that doesn't really make them seem energetic or excited. from that alone, you can infer that "stoicism" is your answer, but that word relates to a pointed lack of emotion, like when someone doesn't want to lose face or show that they're in pain.