What is the top reason given by R&D managers why they believe that different barriers to imitation are effective for products?

Armon really dislikes his management professor, Dr. Paul, because he is getting a bad grade in the class. When it comes time for student evaluations of professors' performance, Armon rates Dr. Paul low on the category "knows the subject of management well", even though Armon agrees that Dr. Paul knows that material well. This is an example of which of the following perceptual biases?

a. Halo effect b. Fundamental attribution error c. Horns effect d. Contrast effect

Ultimately, style is _______________

a. inevitable b. not teachable c. the writer d. an afterthought to the content