In this conversation, the discussion technique that Ramona most clearly demonstrates is:
D. Identifying a bias
A bias is an unfair prejudice against something or someone. Ramona identifies that Han has a bias about bees. Also, Ramona states that Han has that bias because of his past experiences, which is why Han doesn't mind that they are being killed by pesticides. She doesn't use multiple sources or create a research plan. Finally, Han didn't say anything that sounded contradictory.