What action is performed when someone inquires or discusses a subject in detail?

The action of inquiring or discussing a subject in detail is best characterized by the term "discuss." When someone engages in discussion, they are actively sharing ideas, exploring different perspectives, and elaborating on the subject matter at hand. This process often involves asking questions, providing answers, and elaborating on points to achieve a deeper understanding.

In contrast, "examine" implies scrutinizing or analyzing something closely rather than engaging in a conversational exchange. "Experiment" refers to the process of testing or investigating hypotheses through practical applications, which does not align with the idea of discussing a subject extensively. "Discriminate" involves distinguishing between different elements or categories, which is not directly related to the act of discussing or inquiring about a particular topic. Therefore, "discuss" accurately captures the essence of the detailed inquiry or conversation being addressed.