How can a defendant waive their right to contest personal jurisdiction?

A defendant can waive their right to contest personal jurisdiction through various actions that indicate a willingness to submit to the court's authority. Failing to raise the issue of personal jurisdiction as a defense in a timely manner is one such action. If a defendant does not raise this defense in their initial pleadings or motions, they may forfeit the right to contest jurisdiction later in the proceedings.

Additionally, by appearing in court without specifically contesting personal jurisdiction, a defendant demonstrates an acceptance of the court's authority over them. This appearance could be for various purposes, such as participating in hearings or other proceedings, allowing the court to presume jurisdiction exists unless explicitly challenged.

Thus, both failing to contest jurisdiction in a timely manner and appearing in court without raising the jurisdiction issue contribute to the waiver of the right to contest personal jurisdiction, making the combined choice the most accurate answer.