Thermohaline circulation driven by: - Sinking of dense water -Rise oxygen-rich water -wind -upwelling -none?

Question

Thermohaline circulation driven by: - Sinking of dense water -Rise oxygen-rich water -wind -upwelling -none?

Answer 1

From Wikipedia:

"The term thermohaline circulation (THC) refers to the part of the large-scale ocean circulation that is thought to be driven by global density gradients created by surface heat and freshwater fluxes."

Using your choices, it would be a combination of sinking of cold, dense water and upwelling of warm, less dense water (heated by deep floor volcanic activity or made less dense by precipitation of some salts).