What is the purpose of a load cell?

A load cell is a crucial component used primarily for measuring the weight of a load accurately. It operates on the principle of converting the force exerted by the load into an electrical signal, which can then be displayed in weight measurement units. This precision in weight measurement is essential in various applications, such as industrial weighing systems, shipping and transportation, and even in research settings.

The other options, while related to lifting and load management, do not accurately capture the primary function of a load cell. For example, lifting heavy loads pertains more to hoisting equipment and rigs rather than measurement. Stabilizing uneven loads involves techniques or equipment designed to balance loads rather than quantify them. Lastly, determining the center of gravity involves understanding the distribution of weight within an object, which is separate from the measurement function of load cells. Overall, the critical purpose of a load cell centers on its ability to provide accurate weight readings, making option B the right choice.