The correct answer is B. It allows the phone to detect the speaker so they can be paired.
Explanation
In the text are listed the steps to pair the Bluetooth speaker with the cell phone. This text is an informative text that allows the reader to know how to perform the pairing process of these two devices. According to the above, each of the steps has the purpose of explaining a specific step to the user. In the case of step 5, the objective of this step is not specified, however, it can be inferred since this would allow the cell phone to detect the speaker much faster, and it would also prevent the cell phone from recognizing a different speaker than the one that the user wants to pair. Therefore, the correct answer is B. It allows the phone to detect the speaker so they can be paired.
