You personally prefer operating system A to operating system B, but a majority of people in your office use B, and you are eventually compelled to switch in order to interoperate with them. Within two years, nearly everyone uses operating system B. Which of the following mechanisms of herd behavior does this best illustrate?

a. Information concealment

b. Local externalities

c. Exit cascade

d. Information cascade

e. Information feedback

The following applies to questions 3-8 below. Consider the following network: