Frictional unemployment is:
a. unemployment that is due to the friction of competing ideological systems.
b. unemployment caused by lack of training and education.
c. unemployment caused by automation in the workplace.
d. unemployment that is due to normal turnover in the labor market.

d. unemployment that is due to normal turnover in the labor market.

Explanation:

Friction unemployment occurs when workers are searching for a new job. It takes time for workers to find a job that suits their qualifications and experiences. Workers who leave their current jobs and are seeking new employment are described as frictionally unemployed.  Employee turnovers refer to workers leaving a company for better opportunities or other reasons.

Frictional unemployment is not harmful to the economy. It is present even when the economy is under full employment.  An example of frictional unemployment is when a college graduate is searching for a first job. Sometimes the skills and the interest of employees may differ with employers' requirements.

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