Final answer:
d. The transferring of risks to project participants that are best capable of dealing with those risks
The primary basis for selecting a project delivery system is the effective transfer of risks to those project participants best equipped to handle them, focusing on risk management efficiency.
Step-by-step explanation:
The primary basis for selecting a project delivery system is d. The transferring of risks to project participants that are best capable of dealing with those risks. This involves analyzing which parties involved in the project are best suited to assume various risks. The focus is on efficiency and effectiveness in risk management for a project, striking a balance between various factors including cost, time, quality, and scope. It's not solely based on the preference of the contractor, the cost of the project, nor federal and provincial regulations affecting the project, though these may influence the decision.