G4E11:What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?
Direct answer summary (2023-2027 NCVEC pool)
The official correct answer for G4E11 is The solar panel must have a charge controller.
The key fact is The solar panel must have a charge controller. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.