Lines 43-46 are crucial for answering this question correctly. Radford thinks that the nature of emotional response to art has an actual emotional response (line 43). This is captured with E's "bursts into tears."
We also know that the person has to be aware that the experience is fictional (this is from lines 45-46), and this is captured with E's "realizing that he or she is reading about a fictional event."
Lastly, Radford mentioned the nature of emotional response to art as being irrational (line 44), and we find this with E's "irrationally bursting into tears."
E captures all of the elements Radford mentioned, so this is the correct choice.
