The right answer is option E.Options A, B, and C use the object pronouns
him,
them, and
him instead of subject pronouns respectively. Hence, A, B, and C can be eliminated.
Option D has a misplaced modifier
resulting in a period known as the Cohabitation. The best answer is, therefore, option E, in which the modifier
resulting in a period known as the Cohabitation rightly states the result of the preceding clause. It makes sense to say that
the forced appointment of conservative Jacques Chirac by President Mitterand resulted in a period known as the Cohabitation.
In 1986, socialist President Mitterrand was forced to appoint conservative Jacques Chirac as prime minister, resulting in a period known as the Cohabitation, where
him and Chirac governed together.
(A) resulting in a period known as the Cohabitation, where
him and Chirac governed together.
(B) resulting in a period known as the Cohabitation, where
them governed together.
(C) where
him and Chirac governed together, resulting in a period known as the Cohabitation.
(D) where
he and Chirac,
resulting in a period known as the Cohabitation, governed together.
(E)
resulting in a period known as the Cohabitation, where
he and Chirac governed together.