What FAR part discusses government-wide purchasing programs?

The correct answer focuses on Part 8 of the Federal Acquisition Regulation (FAR), which specifically addresses government-wide purchasing programs. This part encompasses various methods and systems for federal agencies to procure supplies and services efficiently. It outlines the use of Federal Supply Schedules and other contracts that are available for government agencies to meet their purchasing needs.

Part 8 is crucial because it promotes the use of established procurement vehicles, which can streamline the purchasing process and ensure compliance with federal regulations, ultimately achieving cost savings and administrative efficiency for the government.

The other parts mentioned, while pertinent to different areas of federal procurement, do not specifically focus on government-wide purchasing programs. For instance, Part 19 deals with small business concerns, Part 23 pertains to environment, energy, and water efficiency, and Part 15 outlines the procedures for negotiations and source selection in contracting. Each of these plays a vital role in federal acquisition but does not relate directly to the overarching theme of government-wide purchasing as depicted in Part 8.