Final answer:
The correct way to read a meniscus is to view it at the bottom of the curve and at eye level, which ensures accurate volume measurements and avoids parallax errors.
Step-by-step explanation:
To properly read a meniscus, you should always observe the bottom of the curve. According to the instructions, you should make a reading at the lowest point on the curved surface of the liquid. When measuring the volume of a liquid in a graduated cylinder, for example, the liquid level will form a curve. The correct way to read this curve—or meniscus—is to align your eye with the level of the liquid and then take the reading from the bottom of the curve.
Specifically, if you refer to a case where the bottom of the meniscus lies between two markings, you estimate the volume by considering how close the curve is to either mark. If it is closer to the higher mark, the reading would be estimated slightly above the lower mark. However, the reading should never be taken from the top of the meniscus, which would give an incorrect measurement. Furthermore, ensuring that the measurement device is level and reading the meniscus at eye level will prevent parallax errors, which can result in inaccurate readings. Therefore, the correct ways to read a meniscus are option B) Bottom of the curve and option C) At eye level.