The correct answer is B. Because a one-word refrain is less difficult than a long refrain.
The refrain in Poe's 'The Raven' consists of one word only because of its brevity (shortness). This is what Poe wrote in his <em>The Philosophy of Composition </em>(a text about how he went about writing this poem):
<em>Since its application was to be repeatedly varied it was clear that the refrain itself must be brief [...] This led me at once to a single word as the best refrain.</em>
Universal or generally accepted fact
An example of a question you should ask yourself is -Did the speaker present a clear opinion on the topic.
