Read these lines from “To Autumn.”

Season of mists and mellow fruitfulness,
Close bosom-friend of the maturing sun;
Conspiring with him how to load and bless
With fruit the vines that round the thatch-eves run;
To bend with apples the moss'd cottage-trees,
And fill all fruit with ripeness to the core;
To swell the gourd, and plump the hazel shells
With a sweet kernel; to set budding more,
And still more, later flowers for the bees,
Until they think warm days will never cease,
For summer has o'er-brimm'd their clammy cells.

How do these lines develop the theme that autumn is a beautiful time of year?

A. They focus on the animals who have grown strong and frolic during autumn.

B. They describe the behaviors of people as the crisp evenings of autumn return.

C. They describe the season as a period characterized by abundance.

D. They suggest autumn is a season when the world is just coming to life.