The oldest girl whispered to her sisters that she had a plan. She had read that onions could freeze a troll in his tracks. She tricked the troll into taking an onion from the cupboard by saying it was a delicious yellow apple. He greedily grabbed it and was frozen in place. The middle sister figured out how to untie the ropes around them. She used them to sew the troll into a trap.
Remember, The falling action is when the conflict is resolved. So in this text you should look for when everything is settled, and that is in the last paragraph.
"When their father returned, he was surprised to see the frozen troll sitting in the room. The youngest sister led them to a small cave far from their cottage, where they could leave the troll." This part seems more reasonable for the falling action because it shows when the conflict is decreasing.
The girls and their father returned home to enjoy their new books, new thread, and new basket. And the troll never bothered them again. This would be the resolution or the end of the story.
