Which document represents a formal request for pricing from a supplier?

The document that represents a formal request for pricing from a supplier is the "Request for Quote" (RFQ). An RFQ is typically used when a buyer wants to solicit price quotations for specific goods or services from multiple suppliers. This process allows the buyer to compare pricing, terms, and conditions provided by various suppliers in a structured manner. By issuing an RFQ, the buyer clearly communicates their needs and encourages suppliers to respond with detailed pricing and availability information, thus facilitating the procurement decision-making process.

In contrast, other options serve different functions. A response to an RFQ is what the supplier provides after receiving the request, containing their pricing and terms. A purchase order acknowledgment is a confirmation from the supplier that they have received and accept a purchase order; it does not initiate the price quoting process. Lastly, remittance is related to payments and transactions, not to the procurement of pricing.