Which of the following best describes 'judges'?

Persons summoned and sworn under oath to determine questions of fact in a judicial proceeding.

Persons who ensure the rules of evidence are followed and who decide questions of law in a judicial proceeding.

Persons who give legal opinions to clients, and who represent clients in court.

Persons who generally perform non-litigious work for clients, such as drawing up contracts, preparing wills and forming companies.