When a firm colludes with other firms to control prices, it is engaging in

A) competitive favoritism.
B) industry tightening.
C) monopolistic competition.
D) price fixing.
E) regressive pricing.

Price Fixing

An illegal agreement among competitors to set prices at a certain level, rather than letting them fluctuate naturally with market forces.

Industry Tightening

A period where industry competition becomes more intense, often leading to consolidation, increased regulation, or higher barriers to entry.