Pacing is characterized as the literary device in which the author opts for a certain pace/speed to unfold the story in order to prevent the readers from being bored due to the length of the story. In the given excerpt, the author <u>employs 'pacing' as he begins with a brief informative sentence '...then I heard' and this action is immediately stopped and the pace of the story is slowed down using a lengthy 'complex-compound' sentence</u>. Thus, <u>option C</u> is the correct answer.
Part B
The key purpose for which the author employs 'pacing' is 'to build tension.' The excerpt <u>begins with a strange detail regarding the 'vibrations of the chain.' This action is immediately frozen in order to get involved in his own psychological problems('hearken to it with the more satisfaction, I ceased my labors and sat down upon the bones')</u>. This develops tension in the readers' minds <u>by leaving them uncertain about what would happen next</u>. Thus, <u>option d</u> is the correct answer.