A user is unable to stream audio from a smartphone to a house speaker. Which of the following BEST explains the reason for this issues?

Most house speakers that stream audio wirelessly from a smartphone use Bluetooth technology for connection. If Bluetooth is not enabled on either device, they are not paired, or there are interference issues, audio streaming will fail.

MDM (Mobile Device Management) configuration is for managing corporate devices and does not directly affect a user's ability to stream audio to a personal house speaker.

A data-saving feature would typically restrict cellular data usage or background app data, but it would not prevent local audio streaming over Bluetooth.

Using a proxy or VPN mainly affects internet traffic routing and security, and would not prevent local audio streaming via Bluetooth between devices.