For your output. 1. Tools which are made of plastic should be kept clean and sanitized
properly in preparation for the next patron

True

Explanation:

Indeed, nail care tools and equipment should be safely handled, and one way to do this according to the "T.L.E LEARNING MODULE " is to ensure that all "tools which are made of plastic should be kept clean and sanitized  properly in preparation for the next patron."

Hence, a chemical solution such as bleach could be used to sanitize the tools used after a session.