Which of the following actions would constitute tampering with evidence?

Tampering with evidence involves actions that interfere with the integrity or availability of evidence in a legal context. Destroying a document falls directly into this category, as it intentionally alters or eliminates potential evidence that may be crucial for an investigation or legal proceeding. By destroying such documentation, an individual hinders law enforcement or judicial processes from ascertaining the truth, which is a key aspect of tampering.

In contrast, filing a false report, while illegal and unethical, does not involve the physical alteration or destruction of evidence. Refusing to testify also does not equate to tampering, as it deals with a person's unwillingness to provide testimony rather than the manipulation of evidence itself. Concealing a suspect might relate to obstruction of justice, but it does not directly indicate tampering with physical evidence. Thus, destroying a document is the action that specifically constitutes tampering with evidence.