Read the selection and answer the question: Which theme is developed in the paragraph?
"Reid stood in the doorway and looked at the mess. Crystal, his little sister, was standing in the middle of what looked like a cloud of flour. Her face looked like it was about to crumble. 'The bag fell when I was trying to get a box of cereal, and when I tried to clean it up I just made it worse!' Reid walked to the broom closet and took out a broom, dustpan, and the vacuum cleaner. 'Go get some towels and a bucket of water. It's okay. We will get this cleaned up together.' Crystal no longer looked like she would cry. 'Thanks, Reid!' She ran to the linen closet to gather more supplies."