<u>a- William Crawford </u>was not considered as the Presidential contender by the House of Representatives due to the 12th Amendment.
<u>Explanation</u>:
The Presidential Election was held on 1824 in United States of America. In this election John Quincy Adams defeated Andrew Jackson by gaining more electoral votes through the House of Representatives.
The result of election in 1824 was decided by the House of Representatives due to inconclusive Electoral College result.
Twelfth Amendment was passed by U.S Congress on December 9, 1803. Twelfth Amendment is made after correcting the flaws in the earlier electoral system that was responsible for the controversial Presidential Election of 1800.
C. He supported the idea of a UN-run war in Serbia to bring peace to the area" is the best possible option, but he also negotiated with the Russians, although minimally.