One possible answer could be "subjective".
This is the simplest yardstick of economic performance. If one person, firm or country can produce more of something with the same amount of effort and resources, they have an absolute advantage over other producers. Being the best at something does not mean that doing that thing is the best way to use your scarce economic resources. The question of what to specialise in--and how to maximise the benefits from international trade--is best decided according to comparative advantage. Both absolute and comparative advantage may change significantly over time.
Adaptive expectations
A theory of how people form their views about the future that assumes they do so using past trends and the errors in their own earlier predictions. Contrast with rational expectations.
Adverse selection
When you do business with people you would be better off avoiding. This is one of two main sorts of market failure often associated with insurance.
The answer is D, the Sixth Amendment. This Amendment gives the right to confront witnesses against an accused to the defendant (Accused) during criminal prosecution. This allows for due process and a more fair trial. The goal is to allow the accused to properly defend him or herself during the entire course of the criminal prosecution and to act as a safeguard against the admittance of dishonest witnesses and/or witnesses. An example of this is the process of cross-examination during criminal trials wherein the accused is given the right to question or re-examine a witness after their direct examination in court by the prosecutor. During the cross-examination, the accused's lawyer may question the witness to show any holes in the credibility or truth of the witnesses' testimony.
