Final answer:
A duplicate, for purposes of the best evidence rule, is a reproduced copy of the original document or recording. It is admissible in court when the original is unavailable.
Step-by-step explanation:
The duplicate of a writing, recording, or photograph, for purposes of the best evidence rule, refers to an accurate reproduction of the original document or recording.
It is considered secondary evidence and is admissible in court when the original is unavailable.
The best evidence rule requires that the original document be produced in court if it is available.