In the given scenario, Brittany is trying to have a broad spectrum therapy, i.e., option a.
Using a combination of several different types of health interventions is referred to as broad-spectrum therapy.
As in the given scenario, Brittany is trying to change her attitude as well as avoiding things that prompt her to not exercise, this shows a broad-spectrum therapy.
Thus, the correct option is a.
For more details regarding broad-spectrum therapy, visit:
https://brainly.com/question/20129646
#SPJ2