To apply an access list to an interface on a Cisco router, you use the ip access-group
command followed by the access list number or name, and specify the direction (in or out).
In your case, since you have created a named access list called BlockSales
, the correct command would be:
(config-if)#ip access-group BlockSales in
So, the correct answer from your options is:
(config-if)#ip access-group BlockSales in
Please note that access list names are case sensitive, so make sure to use the correct case as necessary.