Takeshi is seeing dr. shakar to her deal with her social phobia. early in treatment, they built a list of 15 steps beginning with low-anxiety scenarios and ending with high-anxiety scenarios. over time, they have conquered many of the situations on the list, and it is time for takeshi to try staying relaxed while walking down a busy street. the approach dr. shakar is using with takeshi is called
a) flooding.
b) free association.
c) rational-emotive therapy.
d) systematic desensitization.