What is the impact of the scenario that begins the article "your average, everyday zombie"?

the vivid description from the roach’s perspective adds interest and readers better understand parasitic relationships.

the real-life story told from the wasp’s perspective sets a menacing tone and enhances the readers’ understanding that parasitic relationships are unnecessary.

the fictional story about a roach and a wasp readers better understand the difference between made-up stories and actual parasitic relationships that occur in the natural world.

the detailed background information readers better understand why scientists study parasitic relationships.