The answer is either C or A
Taking the whole poem into account, I think the correct answer must be C.
The jar is a small, common, impersonal object, but in Stevens' view, it affects the nature, depriving it of its inherent wilderness. Although it is one of a thousand, it still has the power and dominion over nature. Its meaningless existence leaves a negative trail in this world. If the jar was regarded as faceless a person living in a highly commercialized, industrialized world, and the nature as freedom, the parallel would be all the more effective.
In your essay give specific details and don't vague if it is not related to the topic you are writing about, is not important.
For example, it means everyone contributes, so when you go to dinner with a group of people, you would all pay for your own bill.
