When must a plaintiff file an answer after the defendant is served with process in a diversity action?

In a diversity action, the correct answer hinges on the Federal Rules of Civil Procedure, which dictate the timing for responsive pleadings. The plaintiff is required to file an answer within 21 days after being served with the defendant's response to the complaint. This ensures that both parties have a structured timeline to prepare their cases and respond accordingly.

The choice suggesting that the answer must be filed at least 21 days before a scheduling conference or a scheduling order is due is particularly important because it reflects the need for compliance with the scheduling order established by the court. It also accommodates the necessity for the parties to have enough time to understand the claims and defenses before formal proceedings begin.

This timeframe allows for efficient case management, ensuring that the court's schedule is respected and the parties are prepared. Understanding this timing is crucial for maintaining the flow of litigation and ensuring that all procedural requirements are met in a timely manner.