Final answer:
Research indicates that physiological changes can intensify emotions. The correct answer to the question is (c) Intensify, as physiological responses such as increased heart rate can amplify emotional experiences.
Step-by-step explanation:
According to research, physiological changes may intensify the intensity of emotional experiences. The option that best fits the blank in this statement is (c) Intensify. Studies on the subject suggest that physiological responses, such as increased heart rate, sweating, or hormonal changes, can amplify how strongly someone feels an emotion. For example, during a frightening situation, the body's fight-or-flight response can make feelings of fear more pronounced.
In contrast to the question about emotions and physiological changes, the Eysencks' theory touches upon personality traits where it denotes that people who score high on neuroticism are not calm or stable. Rather, they tend to experience emotional states that are more intense and less stable.