Deja is the day$-$shift supervisor at a company that manufactures and supplies plastic bottles to pharmaceutical companies. She is responsible for estimating the hiring needs for the day shift at the factory. She also prepares the schedules for the training process of newly hired employees. Most importantly, she overlooks the entire day$-$shift production process at the factory and reports to her manager on a regular basis. In this scenario, Deja is most likely a $\_\_\_\_\_.$

a$.$

first$-$line manager

b$.$

top manager

c$.$

middle manager

d$.$

team leader