You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[Q]: Category: "FIRST" CHRONICLES 
Clue: There is reddening of the epidermis but no blistering in this
[A]: a first-degree burn


[Q]: Category: NORSE 
Clue: Skoll & Fenrir, both this type of fierce canine, will cause mayhem at Ragnarok, the end of the cosmos
[A]: wolves


[Q]: Category: REARRANGE 'EM 
Clue: Wear an ascot to this Puccini opera
[A]:
tosca