Which of the following are considered examples of primary authority?

Primary authority refers to legal sources that establish the law and include statutes, judicial opinions, and regulations. The correct choice encompasses all the primary sources of law mentioned in the options given.

Statutes are laws enacted by legislative bodies, and they serve as a primary legal authority for various issues. Judicial opinions are decisions made by courts that interpret statutes and apply legal principles to particular cases. These opinions form case law, which is also considered primary authority. Regulations are rules made by administrative agencies based on the statutes that empower them, which also constitute primary authority as they have the force of law.

In this context, the selection merges both judicial opinions and statutes as direct sources of law, thereby affirming the answer as comprehensive in identifying primary authority accurately.