Final answer:
The first step when cleaning a minor spill is to put on appropriate PPE.
Step-by-step explanation:
The correct answer is B. Put on appropriate PPE. When cleaning a minor spill, the first step should always be to put on appropriate Personal Protective Equipment (PPE) to protect yourself from any potential hazards. This may include wearing gloves, goggles, or a lab coat depending on the nature of the spill.