Which of the following safety measures should be taken when using a sander?

Using both hands for stability while operating a sander is a crucial safety measure. This practice helps maintain better control over the tool, which is especially important given the high-speed nature of sanding operations. Proper grip enables the operator to manage any sudden movements or vibrations, reducing the risk of accidents or injuries that could occur if the tool slips from the user's hands. Utilizing both hands also supports correct body positioning, helping to minimize muscle strain and enhance overall safety during the sanding process.

In contrast, neglecting to clean the work area can lead to hazardous conditions, including slips and falls, while ignoring the noise generated by power tools could result in hearing damage over time. Additionally, wearing open-toed shoes is unsafe in a workshop environment, as they do not provide adequate protection against falling objects or sharp tools. Each of these other options compromises safety, making the choice of using both hands the most responsible and effective practice.