Final Answer:
1. Trevor's description of his family suggests he comes from a(n) B. Poor background.
2. Mr. Thomas' nickname, Old Misery, is an example of A. Foreshadowing.
3. Trevor derides Blackie's plan as D. Childish.
5. T's knowledge of the architect of Old Misery's house demonstrates that he is A. Educated.
Explanation:
1. In the story, Trevor's description of his family, particularly their economic struggles and living conditions, strongly suggests a B. Poor background. The narrative provides details that indicate financial hardship, portraying Trevor's family as part of a lower socio-economic class.
2. Mr. Thomas' nickname, Old Misery, serves as an example of A. Foreshadowing. The name foreshadows events in the story, indicating that something unpleasant or unfortunate may happen to Mr. Thomas. The use of such a nickname hints at a future turn of events and contributes to the story's suspense.
3. Trevor's derision of Blackie's plan as D. Childish reflects his criticism of the plan's immaturity and lack of sophistication. Trevor, portrayed as a strategic thinker, dismisses Blackie's plan as naive and unsophisticated, highlighting the clash in perspectives among the characters.
5. T's knowledge of the architect of Old Misery's house demonstrates that he is A. Educated. Trevor's familiarity with the architectural details and history of the house suggests a level of education and intellectual curiosity. This knowledge becomes a crucial element in the story, showcasing Trevor's intelligence and resourcefulness.