In which context is secularism best defined?

Secularism is best defined in the context of a complete separation of religion from civic affairs. This concept emphasizes that government institutions and policies should remain neutral in matters of religion, ensuring that individuals have the freedom to practice their beliefs without influence or interference from the state. In this framework, secularism supports a pluralistic society where various beliefs can coexist without any one religion dominating public life or policy.

The other contexts provided in the options involve varying degrees of integration or association between religion and public life, which contradicts the fundamental principle of secularism. Specifically, integrating religious principles into public policy or associating politics with specific religious beliefs undermines the neutrality that secularism seeks to uphold. Furthermore, promoting a singular religious tradition runs counter to the essence of secularism, which values diversity and independence from religious dictates in governance.