Answer: 1.(D), 2.(D)
Explanation:
Natural rate of unemployment is referred to as the ratio, the state of full employment, in proportion with workforce that are still unemployed. Natural unemployment rate is evaluated by an economy's supply side, therefore economic institutions and production possibilities. Natural rate of unemployment is also referred as the combination of structural and frictional unemployment that tends to reside in an efficient and booming economy where resource and labor market is mostly in equilibrium.