Questioned documents may contain ______ and _____.

Questioned documents can indeed contain various elements that can be analyzed for authenticity and origin. The correct answer highlights latent fingerprints and DNA as critical aspects often found on such documents.

Latent fingerprints can be crucial in crime scene investigations as they may provide definitive proof of who handled the document. These fingerprints are not immediately visible and require specific techniques to be identified, making them a vital part of questioned document analysis.

DNA is also significant because it may be retrieved from various surfaces on a document, offering potential insights into the individuals involved in its creation or alteration. Both of these forensic elements contribute to understanding the context and legitimacy of questioned documents, which is essential in criminal investigations and court proceedings.

The other options present elements that are indeed found in document analysis but do not encapsulate the most classic forensic evidence typically associated with questioned documents. Handwriting and ink patterns may also be relevant, but they do not encompass the broader forensic applications that fingerprints and DNA provide in linking individuals to a physical object.