What aspect of business case development will assist project management the most?

That the sponsor who has developed the business case will also be the sponsor who oversees actual delivery of the project.

That the option chosen has taken recognition of how the resultant project is actually going to be managed and delivered.

That the project management plan for the project is captured as an appendix of the approved business case.

That the business case has sufficient detail to allow the project manager to take over accountability for the financial success of the project