The correct answer is C. Use chemical weapons against his own people.
Explanation
Saddam Hussein (1937-2006) was an Iraqi politician who is known for holding the presidency of Iraq between 1979 and 2003. He is also known for his dictatorial rule in which he repressed Iraqi Shiite and Kurdish movements (who opposed Saddam's government Hussein). One of the most terrifying episodes of his rule was the direct offensives against the Iraqi Kurds in which aerial bombardments with chemical weapons were used between 1986 and 1989. So, the correct answer is C. Use chemical weapons against his own people.