Which sentence uses a comma or commas correctly?

Hot chocolate requires cocoa, milk, sugar, and, marshmallows.

Penguins, rheas and, ostriches are birds that cannot fly.

Australia's possums live in treetops sip nectar and only come out at night.

Rice, beans, and tortillas are foods commonly eaten in Mexico, Guatemala, and Costa Rica.

Match each poem with the subculture or counterculture from which it came. hip–hop counterculture feminist counterculture beat generation a. "pay attention, here's the thick of the plot/i pulled up to the corner at the end of my block/and that's when i saw this beautiful girly–girl walkin'/i picked up my car phone to perpetrate like i was talkin'" (jazzy jeff and the fresh prince) b. "for no church told me/no guru holds me/no advice/just stone/of new york" (jack kerouac) c. "you fit into me/ like a hook into an eye/a fish hook/an open eye" (margaret atwood)