The manager of a sporting goods store surveyed customers to determine which products would earn the greatest profit for the store. The survey asked customers which sports they watch most often on television. Which sentence
BEST describes why the survey will NOT provide valid results?
The manager surveyed only customers who shop at his store
The manager forgot to ask customers if they own a television
The manager asked a question about sports customers watch instead of sports they participate in
The manager did not ask which sports were the customers' favorites