I would say B, it makes the most sense out of those
Answer:
Doglo is unhappy with the actions of his friend Cathy and tries to chase Cathy for the dog he took but Cathy is too swift and difficult to catch.
Some days later, Cathy sees Doglo and tries to avoid him but it's too late. However, Doglo is not mad at Cathy, he explains to her that if she needs something she can always ask her friends for help instead of stealing.
Cathy is relieved that Doglo is not angry and at the same time remorseful about her actions. She offers to share her biscuits with Doglo and asks for forgiveness. Both friends rekindle the friendship and play around the neighborhood like they used to do.
C. The narrator feels disillusioned
D. At the story's beginning, he is a methodical thinker, but by the end, he becomes more introspective.
Assuming this refers to Flowers for Algernon, no, they do not. At the end of the story, Charlie begins to see a recession in his intelligence. He reverts back to how he was at the beginning of the story. This proves that Dr. Strauss' experiments are not permanent.