Lennie accidentally kills the puppy by petting or squeezing it too hard. Lennie's dream is to take care of rabbits. When the puppy dies, Lennie has no real remorse for the dog- as he's only worried about what George is going to say about the dead dog (and whether or not he'll let Lennie get rabbits). Lennie tries to justify it by saying that dogs aren't rabbits and that it was the dog's fault that it died in the first place. He even considers hiding the body.
“For many reasons, humans did not notice they were being watched”
states the central idea of the first paragraph. The correct
answer between all the choices given is the first choice. I am hoping that this
answer has satisfied your query and it will be able to help you in your
endeavor, and if you would like, feel free to ask another question.
Answer: A single word, a word with hyphen, or as two words. Hope this helps!
Explanation: