Final answer:
Without the context of the specific literary work, it's impossible to accurately state what Poirot did not question passengers about as the excerpts provided do not give relevant details.
The correct option is D.A description of each woman's dressing gown
Step-by-step explanation:
The student's question seems to be about a detective's line of questioning within a literary work. Given the context of the names mentioned and the style of inquiry, it aligns with what one might find in a detective novel like those by Agatha Christie featuring Hercule Poirot. In the stories featuring Poirot, he is known for his meticulous and thorough method of questioning suspects.
However, based on the information provided, we don't have enough evidence to determine which specific topic or option Hercule Poirot did not question passengers about. To provide an accurate answer, we would need the context of which novel or story by Agatha Christie or another author this refers to since the excerpts provided do not directly address Poirot's methods of investigation.
The correct option is D.A description of each woman's dressing gown