Which sentence best shows correct comma usage?

How does the poem's mood and tone change in each of these stages of “o captain! my captain! ” by walt whitman? (i need an answer asap )

Read the following conclusion for an essay that claims that extreme sports should be more highly regulated because they are too dangerous: whether it is a high level of physical exertion, or extra doses of the "fear factor," it is common for extreme athletes to beat at the door of fate. it is these people who tempt their own mortality, while curious onlookers wait anxiously for the outcome, who must be protected from themselves. which statement provides the most accurate evaluation of the paragraph? a. the closing statement is unsatisfying b. the passage introduces new evidence. c. the thesis is not restated. d. the style is informal and inconsistent.

Write a 250-word essay in which you explain the theme of women’s strength and bravery in the poem.