Concept:The poem\u2019s main subject is revealed by its strong dependence on natural and land-related imagery.
Explanation:Throughout the poem, the speaker uses natural elements to express sorrow and hardship.
References to "till the rock," "harvested paddy," "plots marshy," "earth," and "moon" point consistently to nature as the dominant concern.
The phrase "our land has turned into hoeing rock" presents land degradation through natural imagery.
"The earth has stopped breathing and sighed" treats the earth as a living part of nature.
Even the description of communal suffering, such as "communal loot" and "kindred blood," is framed with images from the natural world.
Such repeated references show that nature is not just a background but the central focus of the poem.
Thus, the option that best matches this dominant subject is nature.
Answer:B. nature