Which statement best describes why comments and documentation are essential in PLC ladder logic?

Which statement best describes why comments and documentation are essential in PLC ladder logic?

• A. They ensure the PLC runs at a higher clock speed.
• B. They remove the need for debugging.
• C. They improve readability, maintenance, troubleshooting, and knowledge transfer while reducing onboarding time.
• D. They automatically generate ladder logic.

Answer: (C)