I am pretty sure to describe what the snake is doing. Hope this helps!
She is caring and warm,at first but then is cold and sly
I am honestly not sure because your options are confusing. The poet says in the last stanza that he doesn't want to take the form of anything natural - he wants to be made of gold, but not become a god, but rather a bird. He would like to be made into a golden bird and sing to the people around him. So I'm not sure what you should pick - he doesn't want to become a god, but rather a bird, but there is no mention of mechanics in the poem.
A thesis statement is to give a brief summary of what exactly your body paragraphs will be about. For example, the author shows pathos, ethos and logos to persuade his audience that all people need to open their eyes and realize how technology is ruining humanity.
Those three point, ethos, pathos, logos will their own paragraphs to explain the claim.