At which point during the criminal process does a defendant declare their innocence or guilt? During their arrest by the police During their initial appearance, During their arraignment appearance, During their Grand Jury appearance
During their arrest: The defendant is often better off exercising Fifth Amendment rights to remain silent during questioning and arrest. The defendant is not required to say anything at this stage.
During their initial appearance: Unless this appearance is the defendant's arraignment appearance (it could be bail, etc.), then the defendant is not required to disclose information.
During their arraignment appearance: The arraignment appearance is where a judge restates rights for the defendant and gives the defendant the opportunity to declare his/her innocence or guilt. This is often the defendant's first formal court appearance.
During their Grand Jury appearance: This step of the trial occurs after the defendant declares innocence or guilt, so this is irrelevant to the question.