cells, organs, tissues, organ systems, organisms cells, tissues, organs, organ systems, organisms tissues, cells, organs, organ systems, organisms tissues, organs, cells, organ systems, organisms
I gave my students this multiple choice question: Which of the following correctly lists the organizational hierarchy of organisms from simplest to most complex?

Only one answer is correct among these 4 choices:
- cells, organs, tissues, organ systems, organisms
- cells, tissues, organs, organ systems, organisms
- tissues, cells, organs, organ systems, organisms
- tissues, organs, cells, organ systems, organisms

Could you tell me which one is correct?

cells, tissues, organs, organ systems, organisms