There is also a circulation person in the lobby to help people who do n't want to use the self - checkout stations . Also in the lobby is the " Customer Service " window where people go to pay fines and deal with other problems / requests . I looked in there . It was clean .

Possible answers: (a). To be sure the employees did their job .; (b). None of the above choices .; (c). To be sure no one knows they stole something .; (d). To be sure that the cameras did n't see them .;
Q: What may be the reason why they looked to make sure things were clean ?
(a).