Final answer:
The destructions described in the question are not associated with Fenrir in Norse mythology. Fenrir is a giant wolf known for killing Odin during Ragnarök, but not for the specific acts of destruction listed.
Step-by-step explanation:
The question asks about the destruction caused by Fenrir, a mythical creature from Norse mythology. None of the options provided describe the actions of Fenrir accurately.
In mythology, Fenrir is a giant wolf who is foretold to kill the god Odin during the events of Ragnarök, but there are no accounts of Fenrir setting the world on fire with his breath, swallowing the sun and moon, causing earthquakes with his howling, or unleashing a plague upon the land.
The closest option that bears resemblance to Norse myths is b) Fenrir swallows the sun and moon, but this action is attributed to another mythical creature, Sköll and Hati, who are said to chase the sun and moon and eventually devour them during Ragnarök.
The descriptions mentioned in the question seem to conflate various mythological and historical sources of destruction and are not specific to Fenrir's mythology.