breathing mask safety goggles rubber gloves lead smock
I gave my students this multiple choice question: A student conducts an investigation using mold spores. In one part of the investigation, he needs to closely examine a spore sample. Which piece of equipment does the student need to use to keep mold spores from entering his respiratory system?

Only one answer is correct among these 4 choices:
- breathing mask
- safety goggles
- rubber gloves
- lead smock

Could you tell me which one is correct?

breathing mask