First.
A Showing the children locking Margot in the closet reveals the narrator's uncaring attitude toward the girl.
B Explaining that after an hour in the sun the rain begins to pour again shows the narrator's sympathy for the children.
C Describing how the children tease Margot, shows the bias the narrator feels toward the children.
D Describing the delight the children feel while playing in the sunshine shows the narrator's envy of their experience.
Second i think it might be D but im not sure