The answer is option D) He has a heart of Gold
A metaphor is when something is exaggerated. He doesn't really have a heart of Gold, she's just saying he is so gernerous and kind. A heart of gold sounds better than you are so generous, so the Author puts it in place.
Best Of Luck,
[tex] \boxed{\boxed{- \ The \ Divergent \ -}} [/tex]
