Explanation
From the top down is described as the need to achieve a strategic goal.
Answer A is incorrect. From the bottom up is described as a problem with the current state of a process, function, or system.
Answer D is incorrect. From middle management is described as a manager needs additional information to make sound decisions or must perform additional functions to meet business objectives.
Answer B is incorrect. From external drivers is used when there's recognized competition in the marketplace.

Explanation/Reference:
When there are large groups of stakeholders, such as in this example, it's practical to find a group of stakeholders that can serve as representatives for the remainder of the stakeholders.
B is incorrect. It's not feasible, as the question indicates, for this large group of administrative
assistants to attend requirements gathering workshops.
C is incorrect. You can't assume that one small group of the administrative assistants needs is
truly indicative of the reminder of the administrative assistants.
D is incorrect. The administrative assistants' managers likely don't know enough detail of how the
administrative assistants currently do their work to speak on their behalf.

Explanation
Change-driven approaches focus more on frequency of communication than on formal documentation. Official documentation is often in writing, but informal communication takes precedence over more formal written communication.
Answer D is incorrect. The best answer is frequency of communication, not the type of communication.
Answer A is incorrect. The best answer is frequency of communication, not correct communication - which is
important, but it's not the best selection for the question.
Answer C is incorrect. The best answer is frequency of communication, not message of communication.
Having the correct message and correct communication channels are important, but these aren't the best selection for this question.

Benchmarking does allow for the discovery of new approaches that have worked elsewhere.
Answer B is incorrect. Benchmarking can be time consuming.
Answer D is incorrect. Benchmarking can restrict new innovations, as the study is based on what's worked elsewhere.
Answer C is incorrect. Benchmarking does require expertise by the person completing the study.