Answer:
The correct answer is 1. incomplete comparison.
Explanation:
In the example, there can certainly exist a logical relation between the two propositions (inquisitive students - make - better students), however, since there is not enough information, a logical relation between them cannot be properly constructed. If the comparison presented some sort of argument then it would be complete. For instance: "Inquisitive children, <em>since they are more curious and open to learning</em>, make better students". Without the argument, the idea seems more like an unsustained opinion, based on prejudice, than anything else.
It helps the reader to understand the text and also helps with remembering events that happen in the story.
Maby you can be more specific on what your trying to ask.
