The police know that the neighbor across from a house where a murder occurred sits on the porch nearly all day and believe he would have seen or heard something the night the murder took place. however, the neighbor doesn’t want to testify. what might the prosecution need to rely on to ultimately get the neighbor to testify?
a warrant
parole
a subpoena
miranda rights

a subpoena, i think. hope this helps!! :)

A subpoena

Explanation:

In this case, the only witness refuses to testify, so the prosecution needs something from a legal resource to compel the witness to talk. There are resources used by the police and the prosecution to make it happen, for example, create a case of obstruction of justice, or justify probable cause of the neighbor involvement in the murder (way more complicated than it sounds), yet the easiest one is a subpoena, that is nothing more than a "document" or written order by a government agency or court, to create an obligation of the witness to give testimony or suffer a penalty, of course, there are complications, since the prosecution has to prove that the neighbor is the only key witness and that he/she was on the porch at that day and time, but that's another story.

Hope this helps

he made 11 calls in one day