What is not associated with upwelling

a horizontal water movements

b vertical water movements

c increased plankton populations

increased nutrients at the surface

Option B.

Vertical movements of water.

Explanation:

Upwelling is a process that happen in open oceans along coastline and is the process in which cold or deep nutrients water rise and move vertically on the surface and replace the warm ones. It occur when wind blow which make water in the ocean to move away from the coastline and during Earth rotation.