Final answer:
Exculpatory evidence is the type of evidence that can clear a person of guilt, as it disputes the prosecution's charges or suggests the accused's innocence, contributing to a potential acquittal.
Step-by-step explanation:
The type of evidence that can clear a person of guilt is exculpatory evidence. This is evidence that directly disputes the prosecution's charges or suggests that the accused person is innocent. It is the definitive proof that challenges the credibility of the prosecution's case or shows that someone else may be responsible for the crime. Exculpatory evidence is crucial for the defense in a criminal trial and can result in acquittal if it convinces the jury that there is reasonable doubt about the defendant's guilt.
By contrast, circumstantial evidence relies on inference, hearsay is commonly inadmissible due to its secondhand nature, and demonstrative evidence is used to illustrate testimony and arguments. In a court of law, the Sixth Amendment ensures the right to present witnesses and to cross-examine, with the standard of proof being reasonable doubt in criminal cases.