Pamela's psychologist is using systematic desensitization to help Pamela overcome intense anxiety about thunderstorms and threatening weather. As part of the process, Pamela creates an anxiety hierarchy that includes:
a) a detailed description of all the physical and mental symptoms of anxiety that Pamela experiences.
b) a list of all her friends and relatives arranged according to their degree of anxiety about thunderstorms.
c) a list of specific scenes related to her fear of thunderstorms, arranged from least anxiety-provoking to most anxiety-provoking.
d) a complete description of all the different fears that Pamela has had at any point in her life, including her current fear of thunderstorms.