Final answer:
The summary of 'Cinderella' is missing the exposition, which includes crucial background information about the character's situation before the events of the main plot.
Step-by-step explanation:
The student's question revolves around evaluating the completeness of a summary of the story Cinderella. The options presented suggest different aspects of the plot might be missing from the summary. The correct answer is C. The summary described is weak because it leaves out the exposition of the story. The exposition would typically introduce important background information, such as Cinderella's life before the transformation, her family dynamic, and how she is mistreated by her stepmother and stepsisters.