Maintenance records are usually kept in 2 distinct but closely related categories.

• A. Preventative and corrective
• B. Light and heavy
• C. Basic and advanced
• D. Internal and external

Answer: (A)

Maintenance records are usually kept in two categories that mirror how we approach keeping equipment reliable: proactive care and post‑failure repairs. The first category, preventative maintenance, tracks scheduled inspections, tests, servicing, and part replacements before anything breaks. Keeping detailed records of these activities helps ensure equipment stays in safe, working order and meets any required standards. The second category, corrective maintenance, documents what was done after a problem or failure occurred—what failed, what repairs were made, what parts were used, and how long the downtime was. This information is essential for understanding why a failure happened and for choosing better maintenance strategies in the future. The two categories are closely related because the results from corrective work feed into planning more effective preventive activity, and good preventive work reduces the likelihood of future corrective actions. Other pairings don’t capture this proactive-versus-reactive distinction, so they don’t describe how maintenance records are typically organized.