What should be changed to make the sentence true is to change the word "aversion" to the word "exposure". This way the sentence will look like this:
The central aim of exposure therapy is to help an individual face their fears through exposure to a situation that causes them negative emotions.
The therapist will use different techniques in order to create a safe environment where the person feels confident to face the fears and situations he avoids, in an attempt to reduce anxiety and achieve a better quality of life.
Learn more about exposure therapy here:
https://brainly.com/question/4393716