Final answer:
The theme of the story 'All Summer in a Day' is the cruelty of human nature and the impact of jealousy. The story explores the emotional and psychological consequences of jealousy and the importance of empathy and understanding.
Step-by-step explanation:
The theme of the story 'All Summer in a Day' is the cruelty of human nature and the impact of jealousy. The story is set on Venus, where the sun only shines for a few hours every seven years. The protagonist, Margot, is locked in a closet by her classmates who are jealous of her ability to remember the sun. The story explores the emotional and psychological consequences of jealousy and the importance of empathy and understanding.