Final answer:
The statement that probable cause is the standard for deciding if evidence is strong enough to uphold an arrest is true. It's a necessary legal standard that must be met before carrying out an arrest or obtaining a search warrant, except in some specific exceptions.
Step-by-step explanation:
The criterion for deciding if evidence is strong enough to uphold an arrest is indeed called probable cause. Probable cause means that there is a reasonable basis for believing that a crime may have been committed (for an arrest) or that evidence of a crime may be present in the place to be searched. This standard is lower than the 'beyond a reasonable doubt' standard used in criminal trials but higher than the 'reasonable suspicion' needed for a police officer to conduct a brief investigative stop.
For instance, if police apprehend individuals suspected of committing an armed robbery and have evidence that they carry unlawful weapons, they may have probable cause for arrest on the weapons charge but would need more direct evidence for the armed robbery charge. The requirement of probable cause applies to arrest warrants, and without it, a person normally cannot be detained. However, officers may arrest someone suspected of a felony without a warrant if probable cause exists, and can arrest people for misdemeanors they have personally observed.
Ultimately, probable cause basis for a search or seizure is constitutional and necessary unless exceptions apply, such as searches incident to arrest, vehicle searches, or border searches. When law enforcement officers need a warrant, they must demonstrate probable cause to a judge.