Question

julian has been asked to describe the resolution in
evolution 2137.\ which question will best help julian?
why is lena so sad at the beginning of the story?
what discovery helps lena solve her problem?
who is most happy with the outcome of the story?

Explanation:

The resolution of a story is the part where the main conflict is solved. The question that targets how the main character's problem is resolved will best help describe this element. "What discovery helps Lena solve her problem?" directly addresses the solution to the story's central conflict, which is the core of the resolution. The other questions focus on story setup, an unclear unrelated detail, and a minor post-resolution observation rather than the resolution itself.

Answer:

What discovery helps Lena solve her problem?