PESTLE is an acronym that stands for Political, Economic, Social, Technological, Legal, and Environmental. These are the six components of the PESTLE analysis, a tool used by organizations to scan their external macro-environment. Each component represents a type of factor that can influence an organization's operations and performance.

The Labor market component is not a part of the PESTLE analysis. While labor market conditions can certainly impact an organization, they are typically considered under the Economic or Social components of the PESTLE analysis. Economic factors include economic growth, exchange rates, inflation rate, and labor market conditions. Social factors include health consciousness, population growth rate, age distribution, career attitudes, and emphasis on safety.

Therefore, the Labor market component is not one of the six components of the PESTLE analysis used for scanning horizon risks.

Choice A is incorrect. The Political component is a part of the PESTLE analysis. It involves understanding the impact of government policies, regulations, and political stability on an organization's operations.

Choice B is incorrect. The Economic component is also a part of the PESTLE analysis. It examines economic factors such as inflation rates, interest rates, foreign exchange rates, economic growth patterns etc., that affect an organization's operations and decision-making process.

Choice D is incorrect. The Environmental component forms a part of the PESTLE analysis too.