The SEMrush Charts tool helps you thoroughly analyze your and your competitors’ campaigns based on trends and their comparison. Look at the image below. Which month was the most successful for Apple.com in terms of cost per acquisition?

The correct answer is November 2017. The question asks to identify the month with the most successful cost per acquisition (CPA) for Apple.com. In the provided chart, CPA is represented by the green line. A lower CPA indicates a more successful campaign because it means less money was spent to acquire each customer. By visually inspecting the green line, November 2017 shows the lowest point on the graph, indicating the lowest CPA value among the given options. All other months (August 2017, October 2017, September 2017, and March 2017) show higher CPA values than November 2017, making them less successful in terms of CPA.