What does the word "salient" most closely mean?

The word "salient" most closely means "apparent" because it refers to something that is prominent, noticeable, or standing out in a significant way. When something is salient, it captures attention and is easily perceived, often due to its importance or relevance in a given context.

In a discussion or description, a salient point would be one that is clearly defined and easily understood, making it prominent among other less significant details. This aligns perfectly with the choice of "apparent," which conveys a sense of clarity and visibility.

The other options do not convey the same meaning. For instance, "obscure" suggests something that is unclear or difficult to see, "irrelevant" relates to something that is not pertinent or applicable, and "negligible" implies something that is so small or insignificant that it can be disregarded. Therefore, "salient" contrasts with these words, reinforcing why "apparent" is the best choice.