Final answer:
D. Emotional Appraisal
Arnold's research suggests that the limbic system, including the amygdala and hippocampus, is involved in emotional appraisal, which is the assessment that precedes and shapes emotional experiences.
Step-by-step explanation:
According to Arnold, the limbic system is involved in emotional appraisal. The limbic system includes crucial structures like the amygdala and hippocampus, which are key in processing emotions and are connected to both the sensation of fear and memory formation. Magda Arnold introduced the concept of appraisal theory in emotion, which states that our thoughts or cognitive appraisals precede and determine our emotional experiences. This idea is reflected in the way the limbic system operates, handling the emotional appraisal that informs our emotional responses to stimuli.