I would say that a person who is dogmatic does use the defensive behaviour of certainty and that such a person is answering only from the dogma that he/she knows and not being spontaneous and dealing with the topic in a living way in a way that is open to the world and seeing the other person's point of view that though one may not agree with another point of view one should at least respect it.
This is a hard question but i think sentence 2 has one
Big, bigger, biggest
fast, faster, fastest
These are all examples of absolute form, comparative form, and superlative form of adjectives. (in that order)
