An example of counterculture might be:

Counterculture refers to a cultural movement or group that actively rejects and opposes the dominant values and norms of mainstream society. The correct answer highlights a movement that is in direct opposition to the prevailing cultural standards, making it a quintessential example of counterculture.

Such movements often emerge as a response to perceived societal injustices or as a way to advocate for alternative lifestyles and beliefs that differ from those widely accepted. For instance, groups associated with counterculture might challenge societal norms regarding politics, sexuality, and consumerism, seeking to create new social pathways or push for significant cultural shifts.

In contrast, the other options do not fit this definition. A political group advocating for change within the system typically works within the established framework rather than opposing it outright. An artistic community promoting mainstream values aligns itself with the prevailing culture, and a youth group focusing on social service may operate within the confines of societal norms to address social issues rather than opposing them. These elements indicate a continuation of the existing culture rather than a challenge to it, which is essential in distinguishing counterculture from other forms of social or political movements.