Which of the following best describes the effect of oceanic circulation on climate?
a. currents bring warm/cold water around the world, affecting areas
b. wind will carry the warm/cold air and water vapor over land masses
c. evaporation will result in the warming/cooling off the air above the water
d. all of the above

All of the above are correct! One major ocean current is the Gulf Stream; it transports warm water to the East Coast of Florida and makes the climate warmer, for example. Wind also carries air and water vapor over land, that's how clouds are moved and how weather is made; without wind to carry it, weather would on precipitate on bodies of water where it originated. Finally, evaporation is a key element in the temperature of the air above a body of water depending on the temperature of the air and the temperature of the evaporating water.