Economists, statisticians, and business analysts are interested in the "unemployment rate” because this number indicates an economic system's ability to effectively and productively use an important factor of production. However, many people believe that a government's "official unemployment rate understates a country's ability to find jobs for its people. One of the two reasons highlighted during the lecture was: a) b) c) d) the seasonality effect the cyclicality effect the discouraged worker effect the retirement effect