Final answer:
The agreement between Delivery Dash and Speedy Delivery to set delivery rates is an example of explicit collusion, which is typically regulated by antitrust laws and can limit market competition.
Step-by-step explanation:
When Delivery Dash and Speedy Delivery, two package delivery services, negotiate to jointly agree on delivery rates for a specific time period, this is an example of explicit collusion. Such agreements are often regulated by antitrust laws because they can limit competition in the marketplace. Companies may attempt to avoid these restrictions by engaging in different practices that can be more difficult to detect; however, explicit collusion is often the most straightforward and detectable form of anti-competitive behavior and can lead to legal consequences. Cartels, which are formal agreements to collude, provide evidence of collusion and are rare in the United States. Instead, most collusion is tacit, where firms implicitly understand that competition is bad for profits.