An argument states: 'Since the local bookstore closed, sales at the neighboring coffee shop have dropped by 30%. This proves that the bookstore was drawing customers to the area who also visited the coffee shop.' Which of the following, if true, would most weaken this conclusion?
✓ Correct Answer: Option B
This option introduces a strong alternative cause for the coffee shop's sales drop, challenging the assumption that the bookstore's closure was the sole or primary reason for the decline.