A. "what he told me before, i have it in my heart."
Ambiguous.
It will be an "ambiguous" ending.
Can you open it better because like I'm trying to read it I know it's about science but I can't really read all the words to help you with your question so please make another photo showing like a better picture of it please thanks
A. It gives readers a sense of grasping for something that can't be caught.