Final answer:
The event in the story that shows the development of the theme of predestination is Mr. Atkinson randomly engraving James' name and birthday onto a gravestone.
Step-by-step explanation:
The event in the story that shows the development of the theme of predestination is option D. Mr. Atkinson randomly engraves James' name and birthday. In this event, Mr. Atkinson's random act of engraving James' name and birthday onto a gravestone symbolizes the idea of predetermined fate or destiny. This event demonstrates that according to the theme of predestination, some events are beyond human control and are predetermined.