Fill in the blank.

In 1955 a group of army generals ... Argentinian president Juan Peron in a military take-over.

- ambulatory - obstinate - subsist

- desist - oust - restive

- destitute - preamble

- interstice - recalcitrant

In 1995 a group of army generals oust Argentinian President Juan Peron in a military take-over.

oust means to take someone out of a position of place, to expel them. In this case it fits within the sentence because the group of generals were driving the president out of his position of power.