C) Too much individualism could take the focus away from supporting the common good" is the best option, since Tocqueville's main concern was that this individual freedom led people to isolate themselves from society. Hope this helps you out!
Alexis de Tocqueville's major concern with individualism is that it may isolate the lives of American folks. This may prove to be disastrous as it can lead to the disintegration of American society. Democratic ideals and capitalist economy promotes individual identity and it may isolate a citizen to the circle of his friends and family. He may lose his traditional or community identity.
