Please explain

When attempting this question, I was in between D and E. I ended up choosing D because I thought she was convincing him more than he was doing, which is presented in answer choice E. I'm looking for a greater explanation with why answer choice E is correct.

Via powerscore: Answer choice (B): Leslie’s argument provides no evidence to support such a definitive, imperative judgment. Her conclusion only addresses the issue of whether or not Erich’s quest for a treasure is rational, not whether Erich should risk his physical well-being.