What does 'inane' generally refer to in conversations or discourse?

'Inane' refers to something that is empty or lacking substance, which is why the selection of that choice is correct. In the context of conversations or discourse, when something is described as inane, it often means the remarks are trivial, superficial, or devoid of meaningful content. This can manifest in discussions where participants may be talking but are not contributing anything of value or importance to the topic at hand. Conversations deemed inane may include mindless chatter or statements that do not provoke thought or interest, highlighting their lack of depth.

The other choices involve concepts that have more depth or significance. Deeply philosophical topics, for instance, are rich in meaning and could stimulate profound discussions. Practical and useful information contributes positively to conversations, and political discourse often involves serious and substantial discussions about governance, policy, and societal issues. Therefore, associating 'inane' with a lack of substance distinctly aligns with its definition.