T0A09:What should be done to all external ground rods or earth connections?
Direct answer summary (2026-2030 NCVEC pool)
The official correct answer for T0A09 is Bond them together with heavy wire or conductive strap.
The key fact is Bond them together with heavy wire or conductive strap. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.