That's a caching issue - scared me to pieces the first time I had it happen. I can't see the edit screen, so cannot compare the two. When it happened to me, the editor to whom I sent a worried message when I resubmitted the quiz assured me that the images looked fine to them. Now I don't worry about it, and know that what I see when I am managing the images is in fact what's there, but if you want to set your mind at ease, you could clear your cache then log on to Fun Trivia again, and open the editing screen.
(Editor in Humanities, Literature and Books For Children)
That's all, folks!