CCARF Practice Question
Correct answer: A
A: Prefilling the assistant's response with the beginning of a direct answer prevents greeting patterns at the generation level—the model continues from the prefill rather than generating new opening phrases. System prompt instructions (D) can help but are less reliable since the model may still produce variants. Post-processing (C) is a fragile workaround. Temperature (B) controls randomness, not specific phrase patterns.
B: Temperature changes how scattered the next tokens are. It does not stop an opening the model is in the habit of producing.
C: Stripping greetings after the fact is brittle, and the greeting may be the start of the real answer.
D: Banning "Certainly" stops those words and not the next polite variant. A prefill stops the opening from being generated.