Read the poem. excerpt from "Rain in Summer" by Henry Wadsworth Longfellow

How beautiful is the rain!
After the dust and heat,
In the broad and fiery street,
In the narrow lane,
How beautiful is the rain!

How it clatters along the roofs,
Like the tramp of hoofs
How it gushes and struggles out
From the throat of the overflowing spout!

Across the window-pane
It pours and pours;
And swift and wide,
With a muddy tide,
Like a river down the gutter roars
The rain, the welcome rain!
…
In the country, on every side,
Where far and wide,
Like a leopard's tawny and spotted hide,
Stretches the plain,
To the dry grass and the drier grain
How welcome is the rain! What is the meaning of the simile in stanza 4?

A The countryside is underwater due to the rain.

B The rain has formed puddles that dot the fields.

C Thirsty plants have soaked up all of the rainwater.

D Rain has made the fields appear flat and smooth.