Answer:
D. enable SSID broadcast
Explanation:
According to my research on wireless network security, I can say that based on the information provided within the question the one exception here would be enabling SSID broadcast. This is because by enabling this feature you are allowing everyone to see that you have a wireless network active. An extra safety precaution would be to disable this feature, that way no one can see your wireless network and the people already connected to it will remain connected.
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