The best example of a sanction from the list B) Country A enacts trade restrictions against country B. Its important to remember that a sanction can be defined as either a threatened penalty for disobeying a law or official approval/permission. In this case enacting trade restrictions would be considered the first definition, <em>a penalty</em>.
The main reason why some Americans were unhappy with Jay's Treaty is because brought the United States "closer" to Great Britain in terms of economic ties, which many feared would weaken the republican nature of the state.