4. Words such as delicious, robust, and strong suggest that Whitman's
speaker

C. Admires the workers' strength and hard work.

Explanation:

Walt Whitman's poem "I Hear America Singing" about the beauty of the American people's hard work. Celebrating the individuality of the workers, Whitman presents an image of how every individual, in their own ways and expertise, makes up the whole of America.

In the short poem, the speaker declares his admiration for the hard work of the different workers, be it the mechanic, carpenter, bricklayer, boatman, a mother, who all did their work happily. He also used words such as "delicious" for the mother's song, "robust" for the young workers, and "strong melodious songs." Such use of words seems to suggest that the speaker admires the workers, their strength, their will, and their hard work.

Thus, the correct answer is option C.

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