Which of the following illustrates a common form of collusion among competitors to defeat the competitive bidding process?

• A. Alternate business among themselves on a rotating basis
• B. Refrain from submitting bids on certain contracts
• C. Agree to stay out of each other's designated markets
• D. All of the above

Answer: (D)

Bid collusion undermines the bidding process by letting competitors manipulate outcomes rather than compete on price and quality. Rotating business among themselves on a regular basis is a classic bid-rotation scheme: each firm agrees to win a contract in turn, preventing true competition and keeping profits predictable for the group. Refraining from submitting bids on certain contracts is bid suppression, where the absence of some competitors bids helps others secure the award at higher or steadier prices. Agreeing to stay out of each other’s designated markets is market allocation, where firms divide customers or geographic areas to avoid direct price competition. Taken together, these patterns are common, deliberate ways competitors corral and control bidding outcomes instead of letting true competition determine the winner. That’s why the best answer is that all of these illustrate collusive behavior.