turn off any electrical equipment dispose of waste materials wash hands and tabletops thoroughly return materials to their proper place
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student conducts an experiment using a common but potentially harmful bacteria culture. After working with the bacteria, which is the most important safety practice to follow?
Possibilities:
- turn off any electrical equipment
- dispose of waste materials
- wash hands and tabletops thoroughly
- return materials to their proper place

wash hands and tabletops thoroughly