Legal moralism suggests that immoral conduct should be:

Legal moralism is a philosophical approach that suggests that the law can be used to prohibit behaviors that are deemed immoral, even if those behaviors do not result in harm to others. This theory holds that promoting a moral standard through law can contribute positively to social order and cohesion.

Choosing to categorize immoral conduct as criminal aligns with the fundamental premise of legal moralism, which is to uphold societal morals and deter conduct that is considered harmful to societal values. By criminalizing such behavior, the law enforces a shared moral standard, which proponents believe ultimately benefits society as a whole.

The other options do not align with the aims of legal moralism. Encouraging immoral conduct undermines the concept of societal morals, as does condoning it for individual expression. Legalizing immoral behavior for societal acceptance contradicts the very foundation of legal moralism, which seeks to restrict rather than accept such behaviors. Therefore, categorizing immoral conduct as criminal is consistent with the objectives of legal moralism in promoting social order.