Instead of going back to school , Phoebe accompanies Holden to (a) the zoo; (b) a movie; (c) a restaurant.

(a) the zoo

I didn't follow her, though. I knew she'd follow me, so I started walking downtown toward the zoo, on the park side of the street, and she started walking downtown on the other goddam side of the street, She wouldn't look over at me at all, but I could tell she was probably watching me out of the corner of her crazy eye to see where I was going and all. Anyway, we kept walking that way all the way to the zoo.