The correct answer is option 4, France. France was not a part of the Third Coalition against Napoleon. The Third Coalition was an alliance formed in 1805 by Austria, Russia, Sweden, and the UK. Its purpose was to counter Napoleon Bonaparte`s expansionist ambitions and prevent the French Empire from becoming too powerful.

Option 1, Russia, was indeed a part of the Third Coalition. Russia`s Tsar Alexander I was one of the key members of the coalition and played a significant role in the anti-French campaigns.

Option 2, Prussia, was also a part of the Third Coalition. The Prussian army joined forces with the other coalition members to challenge French dominance on the European continent.

Option 3, Sweden, was another country that participated in the Third Coalition. Sweden joined the coalition in order to reclaim some of its lost territories from France, particularly Finland.

However, option 4, France, is incorrect as it was not a part of the Third Coalition. France, under the leadership of Napoleon, was the target of this coalition rather than being a part of it. Napoleon`s rapid expansion and his control over much of continental Europe prompted the coalition to form and challenge French dominance.