Hello. Unfortunately, you did not enter the article this question refers to, which makes it impossible for you to answer it. However, I will try to help you as best I can.
To answer this question, you need to read the entire article. After reading this, you should assess what factors, elements, events, or situations the article presents that could have a major impact on Norman Bowker's PTSD. This impact has to be able to bring about large and positive results that cause differences in PTSD.
They have the same endings except in the nosotros and vosotros forms.
Big, bigger, biggest
fast, faster, fastest
These are all examples of absolute form, comparative form, and superlative form of adjectives. (in that order)
