Read the passage from “Why Leaves Turn Color in the Fall.” Was that a goldfinch perching in the early September woods, or just the first turning leaf? A red-winged blackbird or a sugar maple closing up shop for the winter?

What is the figurative meaning of the phrase “closing up shop for the winter”?

It is a metaphor in which the “shop” is the summer.
It is a synecdoche in which one bird and one maple tree represent all of nature.
It is a hyperbole that means the trees are no longer green.
It is personification that makes the birds and trees seem like people doing seasonal chores.