Answer:
The answer is: A. cause-effect.
Step-by-step explanation:
Using the words: First, next and finally, we are referring to the process of: Cause-Effect. 
First, we analyze the problems that appear in a process. 
Next, the various variables involved in a process appear. 
Finally, focus attention on the process variable in which the problem occurs. 
The answer is: A. cause-effect.