Answer:
The economy has an unemployment rate higher than the natural rate of unemployment.
Explanation:
Full Employment is when all workers able & willing to work, are employed.
Unemployment is when a person able & willing to do a work , doesn't get work.
However, there is certain 'natural' level of unemployment normalised during efficient running of economy. It involves frictional & structural unemployment. Frictional unemployment is temporary unemployment of people shifting their jobs and Structural unemployment is temporary unemployment due to industrial reorganisation (eg : technological change).
So, Economy being below Full Employment implies that economy has unemployment level above natural rate of unemployment.