burn the materials in a bonfire take the materials to a landfill dump the materials in a trash bin sort the materials by plastics, papers, and cans
I gave my students this multiple choice question: What is most likely the first step for students to do for a recycling project?

Only one answer is correct among these 4 choices:
- burn the materials in a bonfire
- take the materials to a landfill
- dump the materials in a trash bin
- sort the materials by plastics, papers, and cans

Could you tell me which one is correct?

sort the materials by plastics, papers, and cans