Answer:
B: The parallel structure emphasizes the idea that the creative process is easily and often interrupted by life’s events and obligations.
Step-by-step explanation:
According to the excerpt from A Room Of One's Own, the writer talks about the difficulties in writing a work of genius ad several factors would be against it such as dogs barking, health failing, people interrupting, etc.
The purpose of the rhetorical device used in the underlined sentence is that the parallel structure emphasizes the idea that the creative process is easily and often interrupted by life’s events and obligations.