What is an identification document?

An identification document is specifically designed to prove the identity of an individual. This type of document typically includes personal information such as the person's name, photograph, signature, and often identifying features like date of birth or physical characteristics, which enable others to confirm the identity of the holder.

When it comes to the other options, the first describes a document related to educational credentials, which does not serve the purpose of identity verification. The third option refers to travel documents, such as passports, which, while they do identify a person, are not the only form of identification and therefore do not encompass the full definition of an identification document. The fourth option mentions a document lacking a physical description, which fundamentally undermines the purpose of an identification document, as the physical characteristics are crucial for verification of identity. Thus, the correct understanding of an identification document is one that serves to prove the identity of a person, as stated in the correct answer.