Which of these four images is the result to the above and why?
The answer is
ANDROMEDA. The picture of the strawberries clues "ROT" and the nautilus clues the Fibonacci sequence. So to decipher the grid, you use the ROT-n cipher on each letter, where n changes according to the Fibonacci sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21.
I, too think it's the Mona Lisa:
Both the shape of the Nautilus Pompilius and distance/pattern of strawberry seeds are examples of the golden ratio, as is the Mona Lisa(and other Da Vinci Paintings AFAIK) (Partial credit to lois6b). The letter puzzle could be considered a code. I think the riddle refers to "The Da Vinci Code".
It contains stars, which are small shiny points (like the small seeds in the strawberry), arranged in a spiral (like the shell) and their names usually contains Greek letters (like Alpha Centauri, Gamma Tauri and so on).