Answer: The correct answer is "c. will not be good for the economy since the presence of frictional unemployment increases economic efficiency.".
Explanation: Eliminating all frictional unemployment will not be good for the economy since the presence of frictional unemployment increases economic efficiency.
Frictional unemployment is voluntary unemployment that lasts the time between one worker leaving one job and finding another. That is, the unemployed person decided to leave his job voluntarily, either to rest, study or to find another job. It is beneficial for the economy, since it results in a better allocation of resources. However, if the search takes too long and the mismatches are too frequent, the economy suffers, since some work is not carried out.