Final answer:
Some grounds for filing a motion to quash can be waived to ensure efficient administration of justice, allowing defendants to expedite proceedings or gain strategic advantages by relinquishing certain procedural rights voluntarily.
Step-by-step explanation:
Some of the grounds for filing a motion to quash can be waived because the legal system emphasizes the efficient administration of justice. For example, a defendant may waive the right to counsel during a police interrogation, as established in Montejo v. Louisiana, for strategic reasons or to expedite proceedings. Additionally, defendants may waive their right to a jury trial in civil cases, and the right to an appeal in the context of plea bargaining to obtain a lighter sentence or plead guilty to a lesser charge. The concept of waiver is integral to the legal system, allowing parties to voluntarily relinquish certain procedural rights to gain strategic advantages or to simply avoid the complexity and duration of a full trial.