Final answer:
Exposure therapy frequently uses virtual reality technology to treat PTSD and other anxiety disorders. Research supports its effectiveness in controlled, simulated environments for therapy. In contrast, hypnosis is most effective in those highly susceptible to suggestibility.
Step-by-step explanation:
The type of therapy that most often uses virtual reality technology is d. exposure therapy. This approach is particularly effective in treating post-traumatic stress disorder (PTSD) and other anxiety disorders by allowing individuals to confront their fears in a controlled, simulated environment. Research, including Gerardi et al. (2010) and Rizzo et al. (2010), has shown promising clinical results using virtual reality exposure therapy for conditions such as PTSD, with the Virtual Iraq exposure therapy application being one notable example.
In relation to what is most effective in individuals that are very open to the power of suggestion, the correct answer is a. hypnosis. Hypnosis is a therapeutic technique that involves placing individuals into a trance-like state of focused attention and heightened suggestibility to facilitate behavioral or psychological changes.