Answer:
The correct answer is the option C: political disputes between managers involved in the project.
Explanation:
In the situation where a person must coordinate a complex project might struggle with the fact that sometimes differences in political opinions and ideas may occur when more than one manager is in charge of the project. Moreover, in that situation, it is very difficult to agree with the other person and even more if that person has resources that must be used in the project and therefore that person has some power in its hands. In addition, the other factors, such as coordinating the elements or determining the budgets and the needed skill sets of project workers will not have a great impact in the complexity of the project if there are not political differences because in that case all the managers will agree in a way of doing things and they will encourage every employee to do it at once.