Final answer:
The issue that caused some US citizens to lose support for the invasion of Iraq over time was the belief that Iraq had weapons of mass destruction (WMDs). By 2005, it became evident that Iraq did not possess WMDs, undermining the credibility of the US government and leading to a loss of support among some citizens. Option a
Step-by-step explanation:
The issue that caused some US citizens to lose support for the invasion of Iraq over time was the belief that Iraq had weapons of mass destruction (WMDs).
Initially, the argument for war was based on the fear that Saddam Hussein, the then leader of Iraq, was stockpiling nuclear, chemical, or biological weapons capable of causing great harm. However, by 2005, it became evident that Iraq did not possess WMDs, and the invasion had resulted in a violent unraveling of Iraqi society.
This revelation undermined the credibility of the US government and led to a loss of support among some citizens who had initially supported the invasion. Option a