Which of the following is the recommended temperature range for growing microorganisms in a school lab?

The correct answer is C. In a school lab, the recommended temperature range for growing microorganisms is 25°C to 30°C. This temperature range is suitable for a wide range of microorganisms and is easy to maintain in a lab setting. A. 4°C to 6°C is incorrect because it is too cold for most microorganisms to grow. B. 10°C to 20°C is incorrect because it is too cold for most microorganisms to grow. D. 37°C to 45°C is incorrect because it is too warm for most microorganisms to grow and can lead to overheating and death of the microorganisms.