Which U.S. Constitutional Amendment protects free speech rights?

Describe the different types of federal constitutional courts

What will be an ideal response?

A member of the Texas legislature would be immune from adverse judicial action if he or she

A) libels a citizen during a speech at a local Rotary Club. B) is arrested for intoxicated driving while the legislature is in session. C) is arrested for causing an automobile accident during the session. D) slanders in a speech during a legislative proceeding.