Answer:
A. Called for the end of American combat operations in Iraq. (2011)
B. Signed the American Recovery and Reinvestment Act into law. (2009)
C. Created a legislative agenda that included health care reform. (Obamacare 2010)
Step-by-step explanation:
From the options given the only action that Obama had nothing to do with was the establishment of the Office of Homeland Security to combat terrorism, that was made in the year 2002 by former President George W. Bush after the events that took place on 9/11.
The end of the American operation in Iraq was a campaign promise made by Obama and two years later he gets to the position the Congress declared the end of the War.
The American Recovery and Reinvestment Act was a stimulus package in response to the Great Recession.
I hope this answer helps you.