The most logical starting point is C — "the public is easily disillusioned and then" — because it introduces a cause-effect sequence, suggesting what happens after the public loses faith.
Next comes B — "they are angry with you, for it was" — which logically follows, explaining the reason for their anger.
Following B, D — "the illusion they loved; they do not understand that" — completes the thought about what exactly they are upset about, referring to the illusion being lost.
Finally, A — "what interests you is the way in which you have created the illusion" — ties the sentence back to the subject, ending with a reflective note about the creation of that illusion.
Thus, the meaningful sequence is C → B → D → A, which matches option (c) CBDA.