What is the impact of diversity jurisdiction on joinder?

The accurate choice is that diversity jurisdiction requires complete diversity between parties. This principle means that, for a federal court to have jurisdiction based on diversity, no plaintiff can be a citizen of the same state as any defendant. This rule is fundamental because it is designed to prevent home-state bias in cases where parties from different states are involved.

In terms of joinder, the requirement of complete diversity can influence which parties may be joined in a lawsuit. If the addition of a party would destroy the complete diversity necessary for federal jurisdiction, then that party cannot be joined under the diversity jurisdiction framework. This plays a crucial role in determining whether a federal court can hear a case, especially when considering which parties to add in terms of claims or defenses.

This highlights why complete diversity is critical within the context of joinder; it helps maintain the jurisdictional requirements necessary for a case to remain in federal court. The other options fail to adequately reflect the specific requirements and implications of diversity jurisdiction regarding joinder issues.