writing a science report mixing baking soda with water measuring the length of a shadow examining a leaf with a microscope
I gave my students this multiple choice question: During which activity should a student wear goggles?

Only one answer is correct among these 4 choices:
- writing a science report
- mixing baking soda with water
- measuring the length of a shadow
- examining a leaf with a microscope

Could you tell me which one is correct?

mixing baking soda with water