Which of the following tools would likely require a 3-pronged outlet?

An electric sander typically requires a 3-pronged outlet because it is a power tool that operates using electricity and often has a higher demand for current compared to smaller, less power-intensive tools. The 3-pronged design includes a ground prong, which is crucial for safety, especially for power tools that could potentially pose a risk of electric shock if there is a malfunction. The grounding helps to prevent shocks by providing a safe pathway for electricity in case of a short circuit.

In contrast, the other tools listed either do not require a connection to an electrical outlet or are designed to operate on a battery or manual power. For instance, a hand saw is operated manually, and a manual screwdriver requires no electricity at all. Likewise, a battery-operated drill is designed to be used with batteries, making a 3-pronged outlet unnecessary. This distinction emphasizes the specific electrical requirements of power tools like the electric sander.