Final answer:
The next step after a valid complaint is the determination of probable cause. This step assesses the legality of charging the accused and precedes any formal charges or hearings. Following this, constitutional protections apply for the trial process.
Step-by-step explanation:
Following a legally sufficient complaint that has been filed, investigated, and found valid, the next step in the complaint process is typically the determination of probable cause. During this step, the legality of bringing charges against the accused is considered. If probable cause is established, the case may either proceed to an informal proceeding or a formal hearing. These are stages where additional details of the case are presented and evaluated. If probable cause is not found, the complaint may be dismissed.
It's important to note that the probable cause determination is a critical step that comes before any formal charges are brought against the accused in a court of law. It ensures that the legal system is not used to pursue inappropriate or baseless charges. Should the probable cause determination lead to charges, the accused will then benefit from constitutional protections during the trial, such as the right to a speedy and public trial, an impartial jury, and the right to counsel.