Final answer:
The best description of the author’s use of a stylistic element is the change in the description of the clock’s sounds, emphasizing Isaac’s unease.
Step-by-step explanation:
The statement that best describes the author’s use of a stylistic element in this excerpt is: B. The change in the second description of the clock’s sounds emphasizes Isaac’s unease. This is evidenced by the shift from the comforting and steady “Tick-tock. Tick-tock. Tick-tock.” to an irregular and unsettling “Tick-tock. Tock-tick. Tock-tock.” The alteration reflects Isaac’s growing anxiety and distorts the familiar sound into something that contributes to his discomfort. The other options, while they are valid stylistic elements, do not capture the primary effect that the author achieves through the change in the clock’s ticking sound.