Function of Contrasts: Poetry Practice Test

Read the following poem excerpt:

In the laundromat, my mother folds the week

into neat squares, steam rising like a prayer.

The television mouths a storm, but here

quarters click; the dryers turn their planets.

Her hands are raw as winter apples, yet

she hums a song warm enough to melt the lint.

I watch her stack our shirts like finished work,

and feel the room grow smaller than our need.

In context, what is the primary function of the contrast between "raw as winter apples" and "a song warm enough to melt the lint"?

Read the following original poem, included here in full:

In the bookstore café, I underline lines

in a novel I won’t finish.

The barista writes my name wrong

and I let it happen.

Outside, rain stipples the window,

turning pedestrians into watercolor.

My latte foam settles into

a small white island

floating in bitterness.

On the news app, the headline scrolls:

wildfires, floods—

a red tide

rising in my palm.

In context, what is the primary function of the contrast between “a small white island” and “a red tide”?