Which of the following rules says that evidence not obtained using proper procedures may be disallowed from trial?

It is called an exclusionary rule.  It means that evidence that was handled improperly would not be admissible in court.  This is because the evidence may have tampered to the point that it might not be acceptable to use during a trial.

answer: fact: italy has over 300 islands ranging from extremely small uninhabited islands to the huge island of sicily.

explanation:

opinion: italy has way to many islands

answer; obscene;