What does DOI stand for in APA citation?

The correct response is "Digital Object Identifier." This term is essential in academic and research contexts as it provides a unique alphanumeric string assigned to a digital object, such as an electronic document, that facilitates its identification and access. The DOI serves as a permanent link to the content, making it easier for researchers, students, and readers to locate specific sources online, even if the URL changes over time. The use of DOIs enhances citation accuracy and reliability within scholarly writing, which aligns with the standards of APA formatting.

In contrast, the other options misrepresent the concept behind DOIs, either by using incorrect terminology or conflating it with related but different identifiers. The distinction is significant in academic practices where precise citation and referencing methodologies are crucial for maintaining the integrity of scholarly communication.