Answer C is correct. Remember that for the test you are looking for the best possible answer. As per the PMBOK, Third Edition, the best possible answer is C. A is accurate, but it is not the best possible answer. Answer B is the result of a corrective action but it is not the definition of what a corrective action is.
2.
Answer B is correct. The communication channels calculation is (n x (n - 1))/2. In this case the initial number of communication channels is 6 and the second is 55. 55 6 = 49.
3.
Answer D is correct. A cost performance index of 1 or greater suggests that project in delivering more with less money.
4.
Answer C is correct. A schedule performance index of 1 or greater suggests that the project is ahead of schedule.
5.
Answer B is correct. A work package is located at the lowest level of a work breakdown structure.
6.
Answer D is correct. One of the schedule control deliverables is to determine the current status of the project schedule.
7.
Answer B is correct. The Ishikawa diagram, the control charts, Pareto chart, and statistical sampling are examples of basic tools of quality control.
8.
Answer D is correct. With exception of smoothing, which is a conflict resolution technique, the rest are forms of leadership power.
9.
Answer C is correct. Project performance reporting takes into account trending and exceptions in the project scope, schedule, cost, and quality.
10.
Answer B is correct. Before risks can be mitigated, you need to know how probable it is that they will occur and what their triggering events are.
11.
Answer D is correct. The project manager is assigned to achieve the project objectives.
12.
Answer C is correct. A successful enterprise program starts with the tone at the top and the enterprise governance of your organization.