Read the following sentence.  a coherent narrative will be easy to follow and more enjoyable for your reader. using the context, the word "coherent" as it is used means  interesting  complicated  connected  detached

"A coherent narrative will be easy to follow and more enjoyable for your reader." Looking at this, we see the words, "easy to follow," and, "more enjoyable." These are our clue words. We can rule our both A, B and D because none fit in as a definition referring to easy. C, however, fits the definition and this is your answer. 
"A 'connected' narrative will be easy to follow and more enjoyable for your reader." 

The answer would be C. Hope this helps!