Which statement is true about the scope of Article 310?

The statement that the scope of Article 310 covers fixture wires, flexible cords, and cables is accurate because Article 310 of the National Electrical Code (NEC) specifically addresses the installation and use of conductors in a variety of contexts. It includes provisions related to the sizing, installation methods, and protection of these conductors, which makes it comprehensive for flexible cords, fixture wires, and cables.

Considering the other choices, they don't encompass the full intent of Article 310: restricting it to only flexible cords would misrepresent its broader application, whereas limiting it to high voltage or excluding low voltage applications does not reflect the article's comprehensive nature regarding all types of wiring installations it governs. Thus, the correct answer recognizes the wide-ranging applicability of Article 310.