Which type of antitrust violation involves an agreement between competitors to set contract terms for a specific duration?

The question pertains to the nature of antitrust violations, particularly those involving agreements among competitors regarding contract terms. Price fixing occurs when competitors agree on pricing structures, which can include not just the prices themselves but also other contract terms such as duration or pricing methods. By colluding to maintain certain contract terms, these companies restrict competition and manipulate the market to their advantage, leading to a violation of antitrust laws.

In this context, while the other options are also forms of antitrust violations, they do not specifically involve agreements to set contract terms for a defined duration. Market allocation involves competitors dividing markets to avoid competition, bid rigging refers to conspiracies to manipulate the bidding process, and monopolization relates to a single entity dominating a market to the detriment of competition. None of these directly addresses the establishment of contract terms in the same way that price fixing does.