What is the reason liquids should never be poured near a balance in a laboratory?

The rationale behind avoiding the pouring of liquids near a balance is primarily due to the potential for spills, which can result in damage to the balance itself or adversely affect the accuracy of measurements. Balances are highly sensitive instruments designed to provide precise weight measurements. If a liquid is spilled, it can seep into the internal mechanisms of the balance, leading to malfunction or permanent damage. Additionally, any liquid present on the surface can alter the weight being measured by adding additional mass or disrupting the balance's leveling, thus skewing results.

Ensuring a dry and clean environment around a balance is crucial for maintaining its integrity and the reliability of the measurements it provides, making it imperative to handle liquids with care in proximity to such delicate equipment. Other choices do not accurately address the risks or operational standards expected in a laboratory setting.