What happens during a preliminary hearing?

During a preliminary hearing, the primary function is for the judge to determine if there is probable cause to believe that a crime has been committed and that the defendant was involved in it. This step is crucial in the judicial process as it serves as a safeguard against unwarranted prosecutions. The prosecution must present enough evidence to convince the judge that the case should proceed to trial.

Options like entering a plea or organizing a plea bargain are typically reserved for later stages in the legal process, such as at arraignment or during negotiations. The review of evidence for sentencing purposes also does not occur during a preliminary hearing; such reviews happen after a conviction has been reached. Therefore, option A accurately captures the essence of what transpires during a preliminary hearing, focusing on the assessment of probable cause which is essential for establishing the legitimacy of the charges against the defendant.