Which of the following is a common courtroom tactic used by defense attorneys?

A common strategy employed by defense attorneys is to concentrate on procedural errors that may have occurred during the investigation or arrest. This approach emphasizes the protection of the defendant's rights and the integrity of the legal process. By highlighting any errors, such as improper search and seizure or failure to follow legal protocols, defense attorneys can argue that the evidence obtained may be inadmissible in court. This tactic can significantly weaken the prosecution's case and lead to a more favorable outcome for the defendant.

While denying all allegations is indeed a tactic, it is often part of a broader strategy and may not be as effective without substantial supporting evidence or comments on procedural matters. The mention of witness tampering, while a serious offense, is not a legitimate tactic authorized or condoned within the legal profession, as it undermines the justice system.

Therefore, focusing on procedural errors stands out as a commonly accepted and utilized tactic by defense attorneys, helping to protect the rights of the accused and ensuring that the legal process is followed appropriately.