Explanation: Sometimes there are multiple spellings for the very same sound, with no logical reason behind it, these types of configurations are called "spelling patterns." In the given list of words, the spelling pattern is the presence of the sequence of the letters "s" and "c": scene, scientific, discipline, from the given options, the word that fits in that spelling pattern is ascend.
The author used this analogy to show that the Iroquois Confederacy that the system they used was effective and equal everyone involved rather than just one entity (making them interconnected).
