Question

what is the best method to prevent bluetooth from being exploited?
only use bluetooth to connect to another smartphone or tablet
always disable bluetooth when it is not being used
only use bluetooth when connecting to a known ssid
always use a vpn when connecting with bluetooth

Explanation:

Disabling Bluetooth when not in use reduces the window of opportunity for exploitation. Connecting only to smartphones/tablets doesn't prevent all exploits. SSID is related to Wi - Fi, not directly to Bluetooth security. Using a VPN is more for network - level security and not the best for preventing Bluetooth exploitation.

Answer:

B. Always disable Bluetooth when it is not being used