Which sentence is an example of reflection

A I cannot believe it. What did I do to deserve this a blizzard on my 16th birthday now no one will be able to come to my party
B moving across the country and starting over at a new school has taught me that the challenges we are faced with in life make a stronger
C the floorboards creek beneath my feet as I tiptoe through the kitchen, hoping no one would hear me trying to make my way to the front door
D I look forward to the summer because it meant that I would be spending a relaxing week with my grandparents at their house by the lake

B moving across the country and starting over at a new school has taught me that the challenges we are faced with in life make us stronger