TOEFL Listening: TPO-TOEFL听力TPO - HOE8I1WGJ23Y07G1R$

What does the professor imply about the student's proposed research topic? A. A variety of bioluminescent organisms should be included in the research B. Writing about the topic might be difficult because there is so much information on it C. The student should choose a topic that has already been covered in class D. The student should explain how bioluminescence benefits various species of jellyfish differently