What does the term "obscure" refer to?

The term "obscure" primarily refers to something that is not clearly visible or is hidden from view. In various contexts, it can imply that something is difficult to understand or not well-known. When used to describe a physical object or location, "obscure" indicates that it may be concealed or not easily seen by someone. This aligns with the selected answer, as it reflects the essence of the word in terms of visibility and clarity. In contrast, the other options represent concepts that are directly opposite to the meaning of "obscure." For example, "known" and "visible" signify clarity and recognition rather than concealment, while "bright" suggests light and clarity, further emphasizing the idea of something being easily seen rather than hidden.