Option 1 -> abdication means giving up power or responsibility, unrelated to satisfaction.
Option 2 -> authentication means verifying genuineness, not connected to satisfaction.
Option 3 -> gratification means pleasure or satisfaction, a direct synonym.
Option 4 -> altercation means a heated argument or dispute, opposite of satisfaction.
Hence, Option 3: gratification -> It is the perfect synonym for satisfaction, both referring to a feeling of contentment and fulfillment after achieving something meaningful -> correct