Final Answer:
Microorganisms might not be present in the sample. So Option C is correct.
Step-by-step explanation:
A turbid sample indicates the presence of suspended particles in the liquid, causing cloudiness or opacity. The level of turbidity is often correlated with the concentration of suspended particles. Therefore, if your sample is not turbid, it suggests that there might be a lack of suspended particles in the liquid.
Microorganisms, such as bacteria or algae, are typically microscopic and can contribute to turbidity when present in large quantities. If the sample lacks turbidity, it implies a lower likelihood of the presence of microorganisms in significant numbers.
Additionally, the absence of turbidity does not provide information about sediments, which are settled particles at the bottom of a liquid. Sediments are not necessarily responsible for turbidity as they may settle down over time. Thus, the lack of turbidity does not eliminate the possibility of sediments being present.
Similarly, dissolved gases, such as oxygen or carbon dioxide, do not contribute to turbidity as they are molecular and remain in solution. Therefore, the correct answer is C) Microorganisms, as the absence of turbidity suggests a lower probability of suspended microorganisms in the sample.
In summary, the clarity of a sample, indicated by the absence of turbidity, narrows down the possibilities of certain materials being present. While it doesn't exclude the presence of sediments or dissolved gases, the primary inference is the likely absence of suspended microorganisms, making option C the most appropriate choice.