In this situation, the best approach is to consider Project A, which is using a predictive approach, because the planning for this project was based on the assumption that the SME would be available. In a predictive (waterfall) project, timelines and deliverables are often carefully planned in advance, and the absence of a critical resource like an SME can disrupt the entire schedule.
The correct answer is:
C. Project A, because project planning was based on the assumption that the SME would be available.
Since Project A has already planned around the SME's availability, allocating the SME to Project A will reduce the risk of project delays or rework.
While technical excellence is critical in agile projects (answer D), agile projects are generally more flexible and can adapt more easily to resource changes. Therefore, the priority should go to Project A, which has already made firm assumptions about the SME's involvement.