You could use confidence.
The correct answer is A ephemeral--evanescent
Both words refer to concepts that are quickly fading, last for a short time, disappear, or similar.
Boo wants to reach out and touch Jem, She tells him he can, Shows how to gently stroke his (Jem's) hair, Leads him to the porch and he asks "Will you take me home?"
Him.
If you don't know how to solve this, you can put each word in to the blank and see which sounds right.
