Which evaluation criteria for classifying and ranking projects deals with level of difficulty of the project?

The Fourteenth Amendment of the U.S. constitution:

A. intended to prevent Southern states from passing discriminatory laws. B. prohibited race discrimination in voting. C. abolished slavery. D. prohibited the making of laws impeding the free exercise of religion.

Which of the following would not be considered a limitation of simulation modeling?

A) Models are typically unstructured. B) Validation of simulation models can be difficult. C) The cost of building simulation can be prohibitive. D) Simulation allows flexibility in analyzing systems.