scenario needs Full Proxy TCP

Hey, support team, I believe that no One answered the question yet! Is anyone know a clear answer instead of directing to more documents and articles which All don't have the answer but sounds the same. I think the answer should be one of the following options: 1- when connection mirroring is enabled 2- when cashing is enabled 3- when SYN cookie DOS protection is enabled 4- when access lists are enabled

can anyone select the right option? Thanks