Explain in the most eloquent and sophisticated way at least three (3) fundamental differences between the words "WHAT?" and "Which?"

Which" is more formal when asking a question that requires a choice between a number of items. You can use "What" if you want, though. Generally speaking, you can replace the usage of "which" with "what" and be OK grammatically.

Explanation:

i had this question.

owen made and ideal hero because he had all the gret aspects of a good superhero

because they were not just any seashells they were sally's seashells