What does the term "bluntly" imply?

The term "bluntly" implies a manner of speaking that is direct and straightforward, often lacking in subtlety or tact. This aligns with the meaning of lacking feeling or emotion, as blunt communication tends to be very frank, potentially disregarding delicate feelings or nuances. It describes an approach where the speaker delivers their thoughts or opinions without softening the message, which can come across as emotionally detached or lacking sensitivity.

In contrast, the other options suggest manners of communication that either soften the message or add layers of emotional engagement, which does not align with the essence of being blunt.