Question

What does Petey say is the key to breaking through the infection helping the zombies become human again, aside from music?

Answer 1

""Well, music. I've tried classical, country, rap--it all worked, but I'm partial to bluegrass. It confuses them and eventually breaks through the infection. But it's not enough just to blare music at 'em. You need to engage, talk to them. The more you can make them realize you're a person, the better they'll remember that they are, too."

Step-by-step explanation:

In the seventh series of "The End of the Road," "The Run Series" by Lynne Stahl, Jeremiah starts talking to Anna, who has become a zombie. By talking to her Anna is transformed back into human. From this incident Petey gets to know that they can help zombie become back to human not only just by playing the music but also by "engaging with them in talk" and "making them realize that they are humans too." This was the key that Petey says to break through the infection.

Answer 2

In The Run series, Petey Coltrain says that engaging with the zombies and talking to them is the key to breaking through the infection and helping them become human again, aside from music.

Petey realizes this fact when Anna starts to become human again as they were going to the radio station to call for help.