Answer:
C. "Two heads are better than one."
Step-by-step explanation:
This phrase simply means its better to have the advise or views of a second person with previous background information and experience on a concept/ problem you are solving instead of relying on one's understanding. This cliche is important in problem solving process because it provides insights on the concept which can act as a foundation as you start figuring out a solution to a problem. The outcome include : better solutions, creativity and improved ways for tackling the particular challenge. Multiple view points will give the engineer a wider perspective on a concept which includes the barriers to expect as he/she compose a better solution to a certain challenge.