Which sentence is an example of irony?

Question

The cat chased the mouse.
The cat chased the mouse.

The fire station burned down.
The fire station burned down.

The river flowed downstream.
The river flowed downstream.

The sun rose in the east.

Answer 1

The example of irony among the sentences provided is: "The fire station burned down." This is ironic because a fire station is a place associated with preventing and fighting fires, so the idea of it burning down is unexpected and contradictory.