Concept:An archive is a repository that preserves primary sources like historical manuscripts and official records for research and reference.
Explanation:Archives are maintained by governments and organizations to store original documents such as letters, reports, and other written records.
These materials are collected to provide firsthand evidence of past events and transactions.
In contrast, remains of buildings, sculptures, and bones are kept in museums or archaeological sites, not in archives.
Therefore, the correct function of an archive is to keep historical manuscripts and documents.
Answer:C. historical manuscripts and documents are kept