Which of these lines from walt whitman's “i hear america singing” describes a unified america?

i hear america singing, the varied carols i hear,
those of mechanics, each one singing his as it should be blithe and strong,
the carpenter singing his as he measures his plank or beam,
the mason singing his as he makes ready for work, or leaves off work,
the boatman singing what belongs to him in his boat, the deckhand singing on the steamboat deck, . .

I hear America singing, the varied carols I hear

Explanation:

In the other phrases, you have the impression of a limited context or localized singing. The first like, though, "I hear America singing", he treats all people as one; as "America."

The Americans are also signing "varied carols," which means that there is diversity, but all under a single name: "America."

i don't know sorry i cannot read a novel in 30 min.

explanation:

but just in case i think the answer is b.

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.