Okay. I cannot see the article, again but will try my hardest to answer this anyway.
The purpose can usually be seen in the first sentence or paragraph (unless you have an excerpt). Though it may not be too specific it will usually be backed up by evidence later in the passage. A purpose can always be proven by text details.
Choice of details: should support the purpose
organization: Some things are good for some purposes.
e.g. cause effect, shows the good or bad effects of a purpose. The author can support the purpose or no.
chronological can show how something has changed over time.
etc.
Try to identify the main structure and how the passage is organized and how it supports the main idea.
Answer:
Following the paths of others
Making a point of rebellion
Spending time in nature
Taking many interesting walks
Explanation:
This is a poem about love that has been lost and he is sad. I am not sure which of your answers meet this definition of the poem, but he has many interesting walks in life. He just wishes that he could still have that love that is lost. The snow is a symbol for pain and suffering and his heart is aching. It is not just about nature and walking through it, but trying to follow that old path that he cannot follow any longer.
Water. it will be water because water or some kind of liquid is the only thing that will evaporate.
