Answer:
The correct answer is letter "C": Comparative estimates.
Step-by-step explanation:
In project management, comparative estimates are forecasts carried out comparing previous project's information. The purpose of conducting such an analysis is to have an idea of what is the amount of money necessary to conduct a new project. The estimation is what its name describes, just an estimate but help managers to allocate the resources they have and request those who may be necessary for the operations of the new plan.