Answer:
The correct answer is - b. La Nina
Step-by-step explanation:
The central and eastern tropical Pacific Ocean are experiencing cooler than the average during La Nina which is a weather pattern found in the pacific ocean especially in the central and eastern tropical area.
In this pattern rainfall increases on the ocean with warm waters and decreases in a cooler area of the ocean which is the central tropical pacific. These are opposite conditions to the El Nina weather pattern as El Nina warmer than the average sea surface.