Prior knowledge usually means c) the knowledge that I already have on the subject. In other words: the knowledge that a person stems from some previous experience. For example in a sentence: It was proved that a man had no prior knowledge of the incident, so that is why they stopped asking him questions about it.
Answer:To improve the clarity of the paragraph above, SENTENCE 1 should be re-written. The structure of the sentence and the choice of words should be reconsider. A simple sentence can be used to express the fact that if was difficult driving to the fair on that day. For instance, the sentence could read:
Driving to the fair today was a challenging experience.
Explanation: because i know
