Jett has a two$-$week work schedule. During week one, Jett works from $8$ to $5,$ or nine hours a day. During week two, Jett works Monday through Thursday from $8$ to $4$:$45,$ or $8\mathrm{.}75$ hours a day. Jett does not work at all the Friday of week two. This work schedule is known as a$($n$)$

a$.$ adaptable schedule.

b$.$ compressed workweek.

c$.$ enriched workweek.

d$.$ flextime arrangement.