The passage explains that BGM is 'strategically chosen to influence customer behavior' and is an 'important tool that influences the store's sales.' This directly supports the correct answer. The other options are not mentioned. The passage doesn't talk about employees (wrong answer 1) or popular songs (wrong answer 2). While creating a comfortable space is mentioned, the ultimate goal is strategic and sales-oriented, making wrong answer 3 an incomplete and less accurate description of the main purpose.