A culture that promotes individualism is most likely to encourage

Non-conformity

Explanation:

In sociology, Non-conformity refers to a certain form of deviation from the 'standard' that expected by society.

A culture that promotes individualism will teach people to fully pursue their individual desire rather than collective needs. Since individual desire would be less likely to benefit the society as a whole, the type of actions needed to achieve that would most likely be deviant from the standard that is held by the majority of the people.