According to general principles, a file with human-readable content is likely to have what type of header?

A file containing human-readable content typically has a humanly readable header, which is structured in a way that allows users to interpret its content without the need for specialized tools or software. This type of header often includes textual information, such as metadata, file type, or other descriptors that are easily understood by humans.

In contrast, a binary header is primarily used in files that contain data for which human comprehension is not feasible without specific decoding methods. Non-readable headers would imply that the information is unintelligible to humans, which contradicts the nature of the file in question. A compressed header suggests that the information has been reduced in size for efficiency or storage purposes, again implying a lack of direct human readability.

Thus, the presence of a humanly readable header directly correlates to the file's human-readable content, making it the most appropriate choice.