Final answer:
The question seeks an analogy that matches the relationship of an 'orator' being 'articulate.' The correct answer is (c) judge:unbiased, as 'unbiased' is a critical quality for a 'judge,' akin to 'articulate' being essential for an 'orator.'
Step-by-step explanation:
The question, "Orator:Articulate::(a) soldier:merciless (b) celebrity:talented (c) judge:unbiased (d) novice:unfamiliar," is asking for the correct analogy that represents a similar relationship as the one between an 'orator' and being 'articulate.' In other words, the question is looking for which pair shares a similar characteristic trait that is essential to their role or identity as the first pair does.
An 'orator' is someone who is known for being 'articulate,' which is a trait central to their effectiveness in public speaking. Thus, we need to find a pair that has a similarly essential trait. The answer is (c) judge:unbiased, as being 'unbiased' is a quintessential quality that a 'judge' must have, similar to how an 'orator' must be 'articulate.'