Which comment is most appropriate when reviewing a completed task?

Which comment is most appropriate when reviewing a completed task?

• A. Not bad, but you could do better next time with this other disinfectant.
• B. O.K., but you used a wrong disinfectant.
• C. You did a good job cleaning. Next time use the other disinfectant.
• D. Please use the right disinfectant next time, or I'll have to discipline you.

Answer: (C)

Constructive feedback in the lab should recognise what was done well and give clear, actionable steps for improvement. The comment starts with a recognition of a job well done on the cleaning, which reinforces positive practice and confidence. It then provides a specific, doable instruction for the next time—use the other disinfectant—so the learner knows exactly what to adjust without ambiguity. This combination of praise and precise guidance supports learning and adherence to protocols while maintaining a respectful tone. Other options tend to either downplay the effort, focus only on the error, or use threats, which can undermine motivation and hinder safe, compliant performance. The best choice keeps the feedback supportive and aligned with procedural standards.

Constructive feedback in the lab should recognise what was done well and give clear, actionable steps for improvement. The comment starts with a recognition of a job well done on the cleaning, which reinforces positive practice and confidence. It then provides a specific, doable instruction for the next time—use the other disinfectant—so the learner knows exactly what to adjust without ambiguity. This combination of praise and precise guidance supports learning and adherence to protocols while maintaining a respectful tone.

Other options tend to either downplay the effort, focus only on the error, or use threats, which can undermine motivation and hinder safe, compliant performance. The best choice keeps the feedback supportive and aligned with procedural standards.