Final answer:
If a tool is free from dirt, oil, and/or microbes, it has been properly cleaned and is considered to be in a clean state.
Step-by-step explanation:
If a tool is free from dirt, oil, and/or microbes, it has been properly cleaned and is considered to be in a clean state. Cleaning removes visible dirt and grime from the surface of the tool, while also getting rid of any oil or grease that may be present. Additionally, proper cleaning helps eliminate or reduce the presence of microbes, which are microscopic organisms that can cause contamination and infection. An example of cleaning a tool to make it free from dirt, oil, and microbes would be washing it with soap and water, using appropriate cleaning agents and techniques.