I would say an unreliable narrator because that kind of narrator is the best at keeping secrets from the reader. If that's not an option, then a restricted narrator because they only know a limited amount of information.
Answer:
Gloria explained, that she can't clearly see without her glasses.
These words suggest that something is not perfect. It's to make something dim or less noticible. This is of course using my own words. The dictionary might say something else about these words.
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YES, SOME IDEAS CAN BE ELUSIVE, BECAUSE YOU MIGHT HAVE THOUGHT ABOUT IT THEN FORGOT THE NEXT DAY. HOWEVER THE MORE YOU BEGAN TO ORGANIZE AND THINK ABOUT THIS IDEA, IT'S EASY NOW WHEN YOU GET TO ACTION.