Which of the following is an example of successful growth scaling?

Successful growth scaling implies a rapid and sustained increase in revenue, typically without a proportional increase in costs. While any revenue growth is positive, "scaling" in a business context often refers to aggressive expansion. A 50% annual revenue growth rate is generally considered a strong indicator of successful scaling, demonstrating significant market penetration and efficient operational leverage. Growth rates of 5%, 10%, or even 20% per year, while healthy, might be considered steady growth rather than the accelerated, transformative growth implied by the term "scaling." The higher percentage reflects a more dramatic and successful expansion.