Which of the following is an example of the simplest fixed-price contract?

According to the PMBOK® Guide and the Practice Standard for Project Procurement Management, a Purchase Order (PO) is the simplest and most common form of a fixed-price contract.

Definition: A Purchase Order is a unilateral document issued by a buyer to a seller, indicating types, quantities, and agreed prices for products or services. It becomes a binding bilateral contract once the seller accepts it or fulfills the order.

Fixed-Price Characteristics: Because the price is set at the time the order is placed and does not change regardless of the seller ' s cost to produce the item, it falls under the Fixed-Price (FP) or Lump-Sum category.

Usage: It is typically used for " off-the-shelf " items, commodities, or standard services where the scope is clearly defined and the risk to the buyer is minimal.

Comparison with Other Options:

Purchase Requisition (A): This is an internal document used within an organization to notify the procurement department that an item is needed. It is not a contract and does not involve the seller.

Verbal Agreement (C): While potentially legally binding in some jurisdictions, it is not a " standard " or " simple " contract type recognized for professional project procurement due to the lack of documentation and high risk of dispute.

Request for Quote (D): This is a Procurement Document used to solicit proposals or bids from prospective sellers. It is a request for information, not a contract itself.