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: THE COMPUTER AGE 
Clue: Dan Bricklin developed VISICALC, the first of these programs, similar to an accounting ledger
[A]: spreadsheet


[Q]: Category: ANIMALS 
Clue: Also called a warrigal, this wild dog is one of the few nonmarsupial mammals of Australia
[A]: dingo


[Q]: Category: TO PROTECT 
Clue: This "service" is best known for protecting the president, but also investigates forgery
[A]:
the secret service