Answer:
Step-by-step explanation:
I don't think there is a legal meaning for a bench trial. If there is, I can't find it.
A subpoena is a court summons to a appear before a court to give a testimony. It is used sometimes to summon someone who might otherwise not come.
A summons is just an order to appear in court. Either side may use it, but it generally must be disclosed.
The answer is a Voir dire which is used by the Judge as well as the two opposing lawyers to determine the suitability of someone to serve on the jury.