Final answer:
The best option to complete the sentence is 'C. feels the shuddering of her', which adds a sensory detail distinct from 'hears' and continues the personal narrative.
Step-by-step explanation:
The passage presented for filling in the blank deals with a description of a scene where the protagonist, Rachel, experiences an event related to her car while on the canyon floor. Considering the need to maintain the flow and coherence of the narrative, as well as avoiding repetition of the word 'hear' which is already used in the sentence, the correct answer to fill in the blank would be:
C. feels the shuddering of her
This is because the sentence already includes the word 'hears', and using 'feels the shuddering of her' adds a new sensory detail that complements the auditory one provided by the word 'hears'. It also keeps to the immediate and personal experience that Rachel is undergoing.