If mistakes continue even after food handler training, what is necessary?

Correct answer: Supervision, checklist and refresher training

The direct answer is A: supervision, a checklist, and refresher training are necessary. Training gives a food handler knowledge, but a single lesson cannot guarantee that every task will always be done correctly. First, a supervisor observes the work and gives timely guidance. Second, a checklist reminds the worker about handwashing, storage, cooking, temperature, cleaning, and serving steps. Third, refresher training corrects forgotten or misunderstood procedures. Together, these measures reduce repeated mistakes and improve food safety. Option A is correct because it combines teaching, checking, and improvement. Option B is wrong because stopping training removes an important way to correct mistakes. Option C is wrong and unsafe because hiding complaints prevents the enterprise from finding and fixing causes. Option D is wrong because ingredient quality directly affects taste and safety and must be checked. A useful exam cue is: continuing mistakes require follow-up monitoring, not simply more promises.