Final answer:
The correct statement about Cisco Software Support (SWSS) basic is that it's included in the Flex Plan subscription. SWSS provides software support as part of the Flex Plan, offering services such as troubleshooting and updates.
Step-by-step explanation:
The correct statement about Cisco Software Support (SWSS) basic is: D. SWSS is included in the Flex Plan subscription. The Cisco Flex Plan is a simplified way to purchase and manage Cisco's software services, and it frequently includes software support to help with troubleshooting, updates, and technical assistance. As such, subscribers to the Cisco Flex Plan typically have access to SWSS without needing to purchase it separately, making it a convenient option for a wide range of customers, not just those in data centers.