Employees in engineering and marketing often disagree with each other mainly because they have unique backgrounds, experiences, and training.The most apparent source of conflict here is:

A) task interdependence.
B) differentiation.
C) goal incompatibility.
D) scarce resources.
E) ambiguity.

The source of conflict between employees in engineering and marketing is differentiation, which refers to the differences in their backgrounds, experiences, and training. As a result, they may have different perspectives, priorities, and ways of approaching problems, which can lead to disagreements and tension between them. Task interdependence, goal incompatibility, scarce resources, and ambiguity can all contribute to conflict in the workplace, but they are not the main source of conflict in this case.