Crass most nearly means?

The term "crass" refers to something that is lacking in sensitivity, refinement, or intelligence. It often describes a demeanor or attitude that is coarse or unrefined, highlighting a certain level of insensitivity or insensitivity to social norms. In this context, "crude" is an appropriate synonym, as it also conveys a sense of something that is unrefined or lacking in sophistication.

Choosing "crude" as the answer aligns with the commonly understood meaning of "crass" because both terms imply a certain roughness or vulgarity in nature or behavior. A crass remark, for instance, would be one that is inappropriate or offensive due to its lack of taste or politeness.

The other options, such as "polished," "eloquent," and "refined," all suggest an opposite quality, pointing to sophistication, eloquence, or a level of refinement that is not associated with the term "crass." Thus, "crude" captures the essence of what "crass" conveys, making it the correct choice.