The scenario describes a project with aspects of low uncertainty and risk, along with other aspects that have high uncertainty and risk. Since the performing organization has a great deal of experience with traditional construction methods, these aspects of the project represent little uncertainty and risk. However, the organization does not have experience with solar shingles and energy storage, making these aspects of the project high uncertainty and risk. One method of managing the uncertainty and risk is to combine a predictive project management framework with an incremental approach, resulting in a hybrid project. The construction of each home can follow the traditional waterfall framework, but also incorporate an incremental approach by building one home at a time (sequentially). Using the incremental approach and conducting a retrospective after the completion of each deliverable (similarly to how this process is carried out on agile projects) will provide the opportunity for lessons learned to be applied to each subsequent deliverable (home), thus providing opportunities for continuous improvement throughout project execution.
A. Correct. Adopting an incremental approach by constructing the homes sequentially and, after each consecutive home is built, learning what went well and what should be improved will allow the project team to gain valuable information that can be applied to the construction of the subsequent homes in the development.
B. Incorrect. Reviewing the organization's lessons learned repository might yield some useful information regarding home construction. However, the question indicates that this will be the organization's first project incorporating solar panels and energy storage. Thus, it is highly unlikely that the lessons learned repository will have information regarding energy generation and storage, which represents the highest risk and uncertainty for the project.
C. Incorrect. Updating the lessons learned register continuously is a proper project management practice. However, building all of the homes concurrently would not provide an opportunity for lessons learned to be applied to the current project. For example, if the solar shingles are installed on all of the homes at the same time, any mistakes or poor practices would likely be duplicated across all of the homes.
D. Incorrect. Utilizing an incremental approach is a good idea for this project. However, the project retrospective is held at the end of the project. While the project retrospective might be helpful in improving performance with future projects, it will not be helpful with improving performance throughout the current project as requested by the scenario.