Answer:
D is obviously the answer
I am not aware of the story 'The Sand Reckoner'
Therefore, the question 'How do Marcus's words about needing to disembark contribute to the plot of The Sand Reckoner', means that there was a boat in the story of something similar to it.
Therefore, the character Marcus says that the other characters have to leave (disembark) the boat or the something similar to it.
Therefore how does this seem to change or help the plot in the story.
I hope this helped - Maria S.
اَلسَّلَامُ عَلَيْكُم
The ten to whom Paradise was promised (Arabic: العشرة المبشرون, al-ʿashara al-mubashsharūn or العشرة المبشرة, al-ʿashara al-mubashshara) were ten early Muslims to whom, according to Sunni Islamic tradition, the prophet Muhammad ( c. 570–632) had promised Paradise
:)
D. Are often made from powerful feelings that most people can understand. For example in you are afraid of heights that is a type of phobia. Have a good day!