The following question, consist of two words each that have a certain relationship to each other, followed by four lettered pairs of words. Select the lettered pair that has the same relationship as the original pair of words: Book : Critic :: Building : ?

The answer is A. Engineer.

A book is written by an author and then criticized by a critic. Similarly, a building is designed by an engineer and then appraised by an appraiser.

A contractor is a person who builds a building, but they do not appraise it. A weigher is a person who weighs things, but they do not build or appraise buildings.