Out of the strategies below which one would help with Routing Table poisoning the most?

Out of the strategies below which one would help with Routing Table poisoning the most?

a)     Changing the router's password from its default username and password.

b)     Wi-Fi encryption should be WPA2 with AES and each Wi-Fi password should be at least 16 characters long.

c)     Turn off UPnP and NAT-PMP. Choosing the right SSID.

d)    Use a password protected Guest Network.

e)     Turn off WPS.

f)      Make sure that remote administration is off and disabled.

g)     Test Your Router for open ports using some online testers.

h)     Occasionally check for new firmware.