Passage Summary: In the world of contracts, every negotiator has been the victim of a lie. Furthermore, anyone who is lied to has also told a lie, and telling a lie is a form of deception.

Reasoning: The statements establish that all contract negotiators have been lied to, everyone who has been lied to is also a liar, and all liars practice deception.

Analysis: This is a straightforward chain of conditional logic. If we know that every negotiator has been lied to, and we know that being lied to makes you a liar, then we can conclude that every negotiator is a liar. Since the passage also states that every liar practices deception, the inevitable deduction is that every contract negotiator practices deception. When looking for the correct answer, simply follow the 'all' statements to their logical finish line.