Question

Ocean currents move warm and cold water around the Earth, affecting Earth's __________.

A.climate
B.weather
C. temperature
D.all of the above

Answer 1

Affecting Earth's air temperature. 

Answer 2

For your question in the comments

The troposphere is the layer of the atmosphere that

A.contains the ozone layer

B.satellites fly in

C.produces weather

D.causes global warming

It's C. Produces weather