Answer:
Eliminating and Establishing Operation
Step-by-step explanation:
As the title suggests the options which are to be least preferable shall be eliminated, in order to eliminate one shall satisfy with all other possible options.
In the given instance, Andrea wants to follow a healthy diet, and it is provided that she loves junk food, in order to avoid junk food, Andrea tries to eliminate her need for junk food.
For this she fills her stomach with healthy meals so much that she doesn't feel hungry and automatically the desire for junk food do not happen.
She thus eliminates the worst option and establishes the correct use of feasible options.