Final answer:
Veronica used counterconditioning with her therapist to overcome her fear of pink highlighters by associating them with a new, positive response.
Step-by-step explanation:
The therapist's technique used to help Veronica overcome her fear of pink highlighters is known as counterconditioning. This psychological method involves teaching a person to replace a fear or negative response with a new, positive one. The therapy works by associating the feared object, in this case, the highlighter, with a new, relaxing response that is incompatible with fear. This process diminishes the learned association between the stimulus and the fear response and can be quite effective in treating various phobias. Through consistent exposure to the trigger in a controlled environment while practicing relaxation techniques, Veronica would gradually become less fearful and learn to maintain a calm state when encountering highlighters.