For those people who think they need some sort of psychological counseling but don't feel they have the time, talkspace.com allows users to communicate with a licensed therapist online. Due to a(n) _____, the web site's owners know most of their business comes in the evenings and on weekends, so they have hired therapists to work for the online service at these times.
A. Random demand fluctuation
B. Relative demand shift
C. Predictable demand cycle
D. Vertical demand configuration
E. Organized demand pattern
Answer: C. Predictable demand cycle