If the president says, "everything in the war is going as planned. trust me, i am the president," he is using what form of the elaboration likelihood model? under-route processing peripheral-route processing central-route processing classic-route processing

The president is using the peripheral-route processing form of the elaboration likelihood model.
It means that the listener will decide whether or not to believe in something based on the attractiveness of the speaker/his words, and not the message itself. So, they won't really pay much attention to what the president actually said, but given that he is the president, the listeners may choose to believe him solely because of that fact.

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.

My opinion is that it doesn't