Final answer:
A materials-requisition record is indeed a source document, acting as primary evidence of inventory materials transactions in a business.
Step-by-step explanation:
The statement about a materials-requisition record being an example of a source document is true. A materials-requisition record is used to track materials requested from the inventory and is a part of the internal control process in a business's accounting and inventory management systems.
As a source document, it provides primary evidence of transactions that require the withdrawal of materials from inventory. This document is important for maintaining accurate financial records.