A Baby Begins Crying and This Evokes a Negative Physiological

A baby begins crying and this evokes a negative physiological response in her mother. The mother interprets this signal as indicating that the baby is unhappy and she uses several caretaking behaviours to sooth her child. This example best demonstrates how:

A) emotions can be triggered without any cognitive appraisal.
B) positive emotions can serve an adaptive function.
C) emotions are largely determined by how we appraise general arousal states.
D) emotions can serve as a form of social communication.