Final answer:
The combination of safety equipment to use when working with potentially harmful chemicals during an investigation is goggles, gloves, apron, eyewash/face wash.
Step-by-step explanation:
The correct combination of safety equipment to use when working with potentially harmful chemicals during an investigation is Goggles, Gloves, Apron, Eyewash/Face Wash. Goggles protect the eyes from splashes or fumes, gloves protect the hands from direct contact with chemicals, an apron protects the body from spills or splashes, and eyewash/face wash provides immediate flushing in case of accidental contact with the eyes or face. These safety precautions are essential to minimize the risk of injuries or exposure to hazardous substances.
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