Which phrase indicates the discovery of an article?

The phrase "came across" is commonly used to describe the experience of unexpectedly finding or discovering something, such as an article or information. This phrase captures the sense of stumbling upon something without actively searching for it, making it suitable in contexts where a person finds new or surprising material.

In contrast, the other phrases have different connotations: "came up with" typically suggests the act of inventing or thinking of something, such as an idea or solution. "Came back from" refers to returning from a location, while "came down with" pertains to falling ill, generally in a medical context. Therefore, the context of discovery aligns most accurately with "came across."