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.

What is a predic. how did the great railroad strike of 1877 demonstrate the power of workers? ate noun?

Which statement best describes the effect of the metaphor on the excerpt's meaning? o a. it compares the sloshing liquid to a river of water able to push apart the sidewalk o b. it makes the frozen crystals seem like friends to the city to contrast with what a deceitful foe they are. o c. it compares the frozen crystals to delicately lacy snowflakes having arn unexpected strength o d. it likens h20 molecules to hexagonal crystals, which are actually larger than people imagine.

Which tense allows for an event that began in the past to carry into the present moment in time