I think the answer would be " C. understanding the author's purpose " because when you annotate something you aren't just describing it , you are formulating an explanation
Answer: ”Chapter 7 discusses the concept of addiction and the experiments around it. Previous studies have been of rats in cages and monkeys strapped into chairs. Results indicated that rats would choose heroin over food until they died. Dr. Alexander wished to know if the simple addictive nature of drugs was enough to explain this. Perhaps these outcomes were more a product of the rats and monkey's environment...”
Explanation: Got this from a website...
The mood is very powerful, it has a dark atmosphere, on a cloudy day, near a scary lake. The description of the house is detailed as a terrifying place.
The narrator seems to be disconcerted. He had a different memory of his old friend. He is not able to express literally how the whole situation makes him feel.
Answer:
what are you trying to ask sir/mam?