In a law$$ firm, administrative staff can alter the times they come in for work and leave at the end of the day as long as they work $8$ hours and are in the office between$10$:$00$ a$.$m$.$ and$3$:$00$ p$.$m$.$ This is an example of$\_\_\_\_\_\_\_.$

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Part $1$

A$.$

job enrichment

B$.$

flextime

C$.$

work sharing

D$.$

telecommuting$$

E$.$

job redesign