Kim, the client, has requested a cost-effective network solution to accommodate the ability to reconfigure the office space as needed. Which networking solution would provide the BEST solution?

Private IP addressing is an IP address management scheme (using RFC 1918 space) that applies to both wired and wireless networks equally - it does not provide physical flexibility or allow office reconfiguration.

Wireless access points create network connectivity through radio frequency rather than fixed copper or fiber cabling, meaning desks, workstations, and devices can be physically relocated without any rewiring or new cable installation. This directly addresses the requirement for reconfigurable office space at low cost, since no additional infrastructure work is needed each time the layout changes.

Wide Area Networking connects geographically separated sites and is unrelated to the internal office reconfiguration requirement described in the question.

VLANs provide logical network segmentation for security and traffic management purposes but still require physical cabling to endpoints - they do not eliminate wiring constraints when the office is rearranged.