Which is an example of an analogy?

As light as a feather.

As dead as a doornail.

As busy as a bee.

As quiet as a mouse.

As happy as a clam.

Sly like a fox.

You're as sweet as sugar.

here's a famous quote that is also an analogy:

"Life is like a box of chocolates, you never know what you are going to get."

Explanation:

An analogy is a like or as statement used to make some sort of explanatory point.

the second option.is correct