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.

moves its body by bending from side to side. hope this

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.