So it is that existence and non-existence gave birth to (the idea of) the other, that difficulty and ease produce (the idea of) the other, that the length and shortness fashion out the one figure of the other, that (the idea of) height and lowness arise from the contrast of one with the other, that the musical notes and tones become harmonious through the relation of one with another, and that being before and behind give the idea of one following another. Which one of the following is the correct meaning of the ominous little phrase "the idea of in the first sentence of the passage?
Correct Answer: (a) Prior knowledge
Solution:Priar knowledge is the knowledge the learner already has before they meet new information. A learner's understanding of a text can be improved by activating their prior knowledge before dealing with the text, and developing this habit is good learner training for them. So the correct meaning of the ominous little phrase "the idea of" in the first sentence of the passage is option (a) Prior knowledge.