I’d say C) people can’t do anything about the suffering of others
The author might compare "the awkward waddling walk of a swam to the torture of life that humans life on this planet". This might be considered a metaphor for the "release of death and the grace" in comparison to life itself. The reader might perceive that life is awkward and death is sweet. So it could be said that the theme of the poem might be "the release of the burden of life in death".
The answer is D. Is difficult for many to understand because there are cultural backgrounds where people are taught different ways to say the term.
The correct answer is the third one