construction of 3-D models advances in the study of DNA understanding the process of mitosis development of the scientific method
I gave my students this multiple choice question: For years, scientists have classified plants according to their characteristics. Which most likely has led scientists to better identify and discover new species of plants?

Only one answer is correct among these 4 choices:
- construction of 3-D models
- advances in the study of DNA
- understanding the process of mitosis
- development of the scientific method

Could you tell me which one is correct?

advances in the study of DNA