Answer:
functional fixedness
Step-by-step explanation:
This is a good example of functional fixedness. Functional fixedness is a form of cognitive bias that would make an individual not see beyond the uses of something or an object as he or she used to know. They would only see and know the use of the object in a particular way. This is what happened with Hugo, even though he has a thread and needle that can serve the purposes of a line and hook, he doesn't realize this because he only knows them to be used for sewing.