Explanation
Customers, internal or external, are always considered to be the most important group of stakeholders in a project. Recall that a stakeholder is anyone that has a vested interest in the outcome of your project.

Explanation/Reference:
Requirements verification activities are performed iteratively throughout the requirements analysis process.
A is incorrect. Requirements verification happens in iterations, not just at milestones (assuming
there are milestones in the process).
B is incorrect. Verification activities don't happen just at the end of the requirements gathering
process, but iteratively throughout the process.
D is incorrect. This answer is tempting, but it's not the best answer.

Explanation/Reference:
The relationships and inter-dependencies among the requirements add to the complexity of the requirements.
D is incorrect. Stakeholder management can be cumbersome, but the question was asking for a
requirements characteristic, so this choice is incorrect.
B is incorrect. Management in the project can add to the project complexity, but realistically
management should stay out of the business analyst's duties. In addition, the question was asking about the complexity among the requirements.
C is incorrect. Cost and schedule constraints deal more with the project implementation than with
the identified requirements.

Explanation
When there is no business value to implement the solution, then you should recommend that the initiative be terminated.
Answer A is incorrect. Choosing the least costly solution that doesn't add value doesn't make sense for the
organization.
Answer D is incorrect. While this is tempting, the best choice is to recommend that the initiative be
terminated. There's not a good reason to implement a solution that doesn't bring value to the organization.
Answer B is incorrect. Asking for more time isn't the best answer when you've already determined there's no
business value in the solutions.