Unfortunately I don't know what poem you're talking about but I can provide some insight on the word luminous! Luminous is typically applied to people or characters to express a bright and happy personality. So without reading the poem I can tell you the author most likely means the turtle is an optimistic, joyful guy!
Answer: D. When the main character first gets into trouble
Explanation: The rising action begins with an inciting incident.
I think the correct answer is A.
