Which of the following presidents was assassinated while in office

Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be "John F Kennedy" since he was killed in Texas while serving as President. 

The question of what caused the full effects of the radical stage, also called the second french revolution by some historians, which shook the political and social reforms in france have caught the attention of many scholars, particularly because of principles implemented during this stage which is contradictory to the fundamental principle of the french revolution itself, by using dictatorship to create equality.