There was a moment near sunset, when katie felt like the old oak, and laying for winter, which had shed its leaves, was the one thing that actually listened
I'd say peacefulness and relaxation. There's no given reason for the trees to be sad or longing, and trees don't obviously exhale or breathe.
During World War ll, Japanese Americans were not the enemy is the answer! :)
I think that the answer is B: 84 days