Final answer:
Sanchez's success in sales is attributed to understanding crucial sales factors and skill development, akin to Carnegie's historical success which reflected strategic and innovative business behaviors. The correct option is B.
Step-by-step explanation:
Sanchez's success is due largely to the fact that he understood the key factors involved in becoming an excellent salesperson and worked to develop skills to support those factors (Option B). This is in line with historical business figures such as Andrew Carnegie, who was not just a steel magnate but also an outstanding promoter and salesman who capitalized on smart business decisions, thrifty behavior, and a constant push for innovation within his operations.
The tale of Carnegie is an excellent demonstration of how personal traits, combined with a strategic business approach, can lead to significant success in the industrial field and beyond. Hence, B is the correct option.