As per the Bharatiya Sakshya Adhiniyam, 2023, which of the following is primary evidence?

The original report prepared and signed by the commissioner is the document itself and therefore primary evidence under section 57 of the Bharatiya Sakshya Adhiniyam, 2023 (formerly section 62 of the Indian Evidence Act, 1872). A copy of a medical certificate, a photocopy of a will and an enlargement made from another photograph are copies or derivative reproductions, which are secondary evidence under section 58. Section 57 also adds express explanations for electronic and digital records.