TASK DEFINITION: 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.
PROBLEM: Category: TELEVISION 
Clue: It isn't quite as harrowing as "ER" when real people get makeovers on the E! series known as "Fashion" this

SOLUTION: fashion emergency

PROBLEM: Category: THE BRITISH ISLES 
Clue: This island group that lies just north of the Scottish mainland was known to classical writers as the Orcades

SOLUTION: the orkney islands

PROBLEM: Category: THE ELEMENTS 
Clue: The silver fillings used by dentists are about 50% this toxic metallic element

SOLUTION:
mercury