What is an advantage of the alkaline cell compared to the carbon-zinc cell?

The advantage of the alkaline cell compared to the carbon-zinc cell is its longer life. Alkaline cells are designed with a chemical composition that allows them to have a more efficient reaction, resulting in a slower rate of self-discharge. This means that alkaline cells can provide power for a more extended period before they need to be replaced, making them more suitable for devices that require consistent energy over time. The construction and materials used in alkaline cells also contribute to their ability to sustain voltage and deliver energy at a more stable level, further extending their operational lifespan.

In contrast, while other options might have some merit depending on specific circumstances, they do not universally represent the primary advantage of alkaline cells over carbon-zinc cells. For instance, alkaline cells generally tend to be higher in cost and larger than carbon-zinc cells, and although they may offer greater energy density in some cases, the most significant and widely recognized advantage remains their longer operational life.