You are a project manager on a $5,000,000 software development project. While working with your project team to develop a network diagram, your data architects suggest that quality could be improved if the data model is approved by senior management before moving on to other design elements. They support this suggestion with an article from a leading software development journal. Which of the following BEST describes what this type of input is called?
A. Mandatory dependency
B. Discretionary dependency
C. External dependency
D. Heuristic
Answer B