Question

What unusual event occurs during El Niño?

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A. There is unusually low pressure in the western tropical Pacific.
B. The trade winds blow harder to the west.
C. The pressure gradient decreases.
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D. Warm water flows south along the east coast of South America.

Answer 1

The person who answered above me is wrong. The correct answer is C. The pressure gradient decreases. Please, if you are going to answer a question, make sure it's correct.