Mary is the project manager for her organization.

Of all the constraints listed only this is an external dependency, which can directly affect the project manager's control over the project work. If the BGH company is late delivering the software portion of the project, it will likely have an effect on the project's ability to complete the project on time.

Answer option B is incorrect. While regulations may affect the project timing, this is not the best choice.

Answer option D is incorrect. The $1,250,000 is an example of cost constraint.

Answer option A is incorrect. This is only constraint if the project team members are not available, or do not have the required skills to complete the project work.